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CVE-2026-61814

Estado: AplazadaAlta (7.5)—

Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This issue is fixed in version 1.7.0.

CVSS

Probabilidad de explotación (EPSS)

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.

Vector AV:N/AC:L/PR:N/UI:N con impacto A:H indica explotación remota sin privilegios (T1190). El atacante causa DoS mediante rescan cuadrático de tokens JSON en chunks (T1499.004 - HTTP flood/resource exhaustion).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Typelevel — JawnAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-61814",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-61814",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-23T19:25:56.569425Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "typelevel",
          "product": "jawn",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.7.0"
            }
          ]
        },
        {
          "vendor": "org.typelevel",
          "product": "jawn-parser_2.12",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.7.0"
            }
          ]
        },
        {
          "vendor": "org.typelevel",
          "product": "jawn-parser_2.13",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.7.0"
            }
          ]
        },
        {
          "vendor": "org.typelevel",
          "product": "jawn-parser_3",
          "versions": [
            {
              "status": "affected",
              "version": "< 1.7.0"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-23T19:17:32.970",
  "references": [
    {
      "url": "https://github.com/typelevel/jawn/commit/cddcd5e3387c356b05953f7b2af103d309687e4b",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/typelevel/jawn/releases/tag/v1.7.0",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/typelevel/jawn/security/advisories/GHSA-w4cm-gvhj-cgw6",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-407"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Jawn is an open source JSON parser. Prior to 1.7.0, Jawn's AsyncParser can perform quadratic work when a single JSON token is delivered across many small chunks because each absorb call rescans the incomplete token from the start. A remote attacker who controls untrusted JSON input and its chunk sizes can exhaust CPU resources and cause denial of service in applications using AsyncParser. This issue is fixed in version 1.7.0."
    }
  ],
  "lastModified": "2026-09-30T17:32:07.107",
  "sourceIdentifier": "security-advisories@github.com"
}