CVE-2026-33228

Estado: ModificadaAlta (8.9)—
flatted is a circular JSON parser. Prior to version 3.4.2, the parse() function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key "__proto__" returns Array.prototype via the inherited getter. This object is then treated as a legitimate parsed value and assigned as a property of the output object, effectively leaking a live reference to Array.prototype to the consumer. Any code that subsequently writes to that property will pollute the global prototype. This issue has been patched in version 3.4.2.
CVSS

Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Puntuación base: 8.9
Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.99%
Percentil entre todas las CVEs puntuadas: 61
Fecha de la puntuación: 5/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
ExplotaciónT1190 Exploit Public-Facing Applicationinitial access92 %
Impacto principalT1059.007 JavaScriptexecution85 %
Impacto secundarioT1565.003 Runtime Data Manipulationimpact78 %
Vector CVSS:4.0 con AV:N, PR:N, UI:N indica explotación remota sin autenticación (T1190). El ataque usa referencias a Array.prototype para polucionar prototipos globales, permitiendo inyectar código JavaScript que se ejecuta en el contexto del navegador (T1059.007) y manipular datos/comportamiento (
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Network Segmentation Vulnerability Scanning Restrict Web-Based Content Restrict File and Directory Permissions Privileged Account Management Limit Access to Resource Over Network
Tecnologías afectadas (1)

Webreflection — Flatted
CWE

CWE-1321
CWE-915
Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-33228",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-33228",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-24T17:35:34.197834Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      },
      {
        "type": "Secondary",
        "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 8.9,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "HIGH",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
        }
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "WebReflection",
          "product": "flatted",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.4.2"
            }
          ]
        }
      ]
    },
    {
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "affectedData": [
        {
          "cpes": [
            "cpe:/a:redhat:cluster_observability_operator:1.5::el9"
          ],
          "vendor": "Red Hat",
          "product": "Cluster Observability Operator 1.5.0",
          "versions": [
            {
              "status": "unaffected",
              "version": "1782839279",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "cluster-observability-operator/logging-console-plugin-pf4-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:cluster_observability_operator:1.5::el9"
          ],
          "vendor": "Red Hat",
          "product": "Cluster Observability Operator 1.5.0",
          "versions": [
            {
              "status": "unaffected",
              "version": "1782840539",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "cluster-observability-operator/logging-console-plugin-pf5-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:cluster_observability_operator:1.5::el9"
          ],
          "vendor": "Red Hat",
          "product": "Cluster Observability Operator 1.5.0",
          "versions": [
            {
              "status": "unaffected",
              "version": "1782839996",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "cluster-observability-operator/troubleshooting-panel-console-plugin-pf6-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:rhdh:1.8::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Developer Hub 1.8",
          "versions": [
            {
              "status": "unaffected",
              "version": "1776784286",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "rhdh/rhdh-hub-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:rhdh:1.9::el9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Developer Hub 1.9",
          "versions": [
            {
              "status": "unaffected",
              "version": "1777903262",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "rhdh/rhdh-hub-rhel9",
          "collectionURL": "https://catalog.redhat.com/software/containers/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:cryostat:4"
          ],
          "vendor": "Red Hat",
          "product": "Cryostat 4",
          "packageName": "io.cryostat-cryostat",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/elasticsearch6-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/elasticsearch-operator-bundle",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/elasticsearch-proxy-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/elasticsearch-rhel9-operator",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/kibana6-rhel8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:logging:5"
          ],
          "vendor": "Red Hat",
          "product": "Logging Subsystem for Red Hat OpenShift",
          "packageName": "openshift-logging/logging-curator5-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:multicluster_engine"
          ],
          "vendor": "Red Hat",
          "product": "Multicluster Engine for Kubernetes",
          "packageName": "multicluster-engine/console-mce-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp20/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp21/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp22/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp24/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp25/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp26/system",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp2/system-rhel7",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp2/system-rhel8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_3scale_amp:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat 3scale API Management Platform 2",
          "packageName": "3scale-amp2/system-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:acm:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Advanced Cluster Management for Kubernetes 2",
          "packageName": "rhacm2/console-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:amq_broker:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat AMQ Broker 7",
          "packageName": "org.jolokia-jolokia-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:service_registry:2"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat build of Apicurio Registry 2",
          "packageName": "io.apicurio-apicurio-registry",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:build_keycloak:"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Build of Keycloak",
          "packageName": "rhbk-quarkus-dist.zip",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:optaplanner:::el6"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat build of OptaPlanner 8",
          "packageName": "org.optaweb.vehiclerouting-optaweb-vehicle-routing",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:podman_desktop:1"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Build of Podman Desktop",
          "packageName": "podman-desktop-macos-1-0",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:podman_desktop:1"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Build of Podman Desktop",
          "packageName": "podman-desktop-windows-1-0",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_data_grid:8"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Data Grid 8",
          "packageName": "org.infinispan-infinispan-console",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:directory_server:11"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Directory Server 11",
          "packageName": "redhat-ds:11/389-ds-base",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:directory_server:12"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Directory Server 12",
          "packageName": "redhat-ds:12/389-ds-base",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:directory_server:13"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Directory Server 13",
          "packageName": "389-ds-base",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:10"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 10",
          "packageName": "rust",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "packageName": "grafana",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "packageName": "pcs",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "packageName": "grafana",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "packageName": "pcs",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "packageName": "rust",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_fuse:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Fuse 7",
          "packageName": "io.syndesis-syndesis-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_application_platform:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform 7",
          "packageName": "org.jboss.hal-hal-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_application_platform:8"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform 8",
          "packageName": "org.keycloak-keycloak-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jbosseapxp"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat JBoss Enterprise Application Platform Expansion Pack",
          "packageName": "org.keycloak-keycloak-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift_ai"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift AI (RHOAI)",
          "packageName": "rhoai/odh-dashboard-rhel8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift_ai"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift AI (RHOAI)",
          "packageName": "rhoai/odh-mlflow-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift4/ose-console",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:openshift:4"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat OpenShift Container Platform 4",
          "packageName": "openshift4/ose-console-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Process Automation 7",
          "packageName": "org.kie-process-migration-service",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Process Automation 7",
          "packageName": "org.kie.workbench-kie-wb-common",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:jboss_enterprise_bpms_platform:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Process Automation 7",
          "packageName": "org.uberfire-uberfire-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:quay:3"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Quay 3",
          "packageName": "quay/quay-rhel8",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:quay:3"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Quay 3",
          "packageName": "quay/quay-rhel9",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:red_hat_single_sign_on:7"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Single Sign-On 7",
          "packageName": "org.keycloak-keycloak-parent",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:amq_streams:2"
          ],
          "vendor": "Red Hat",
          "product": "streams for Apache Kafka 2",
          "packageName": "com.github.streamshub-console",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        },
        {
          "cpes": [
            "cpe:/a:redhat:amq_streams:3"
          ],
          "vendor": "Red Hat",
          "product": "streams for Apache Kafka 3",
          "packageName": "com.github.streamshub-console",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-03-20T23:16:46.510",
  "references": [
    {
      "url": "https://github.com/WebReflection/flatted/commit/885ddcc33cf9657caf38c57c7be45ae1c5272802",
      "tags": [
        "Patch"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/WebReflection/flatted/releases/tag/v3.4.2",
      "tags": [
        "Product"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/WebReflection/flatted/security/advisories/GHSA-rf6f-7fwh-wjgh",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:13826",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:34342",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2026:9742",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2026-33228",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449872",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    },
    {
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33228.json",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-1321"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c",
      "description": [
        {
          "lang": "en",
          "value": "CWE-915"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "flatted is a circular JSON parser. Prior to version 3.4.2, the parse() function in flatted can use attacker-controlled string values from the parsed JSON as direct array index keys, without validating that they are numeric. Since the internal input buffer is a JavaScript Array, accessing it with the key \"__proto__\" returns Array.prototype via the inherited getter. This object is then treated as a legitimate parsed value and assigned as a property of the output object, effectively leaking a live reference to Array.prototype to the consumer. Any code that subsequently writes to that property will pollute the global prototype. This issue has been patched in version 3.4.2."
    },
    {
      "lang": "es",
      "value": "flatted es un analizador de JSON circular. Antes de la versión 3.4.2, la función parse() en flatted puede usar valores de cadena controlados por el atacante del JSON analizado como claves de índice de array directas, sin validar que sean numéricos. Dado que el búfer de entrada interno es un Array de JavaScript, acceder a él con la clave '__proto__' devuelve Array.prototype a través del getter heredado. Este objeto es entonces tratado como un valor analizado legítimo y asignado como una propiedad del objeto de salida, filtrando efectivamente una referencia en vivo a Array.prototype al consumidor. Cualquier código que posteriormente escriba en esa propiedad contaminará el prototipo global. Este problema ha sido parcheado en la versión 3.4.2."
    }
  ],
  "lastModified": "2026-09-04T13:18:55.120",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:webreflection:flatted:*:*:*:*:*:node.js:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B9B19945-5AD9-4557-A372-AF04A9EDC1BB",
              "versionEndExcluding": "3.4.2"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security-advisories@github.com"
}