CVE-2026-113704

Estado: RecibidaMedia (6.9)—

Gravedad6.9Media · CVSS 4.0

Probabilidad de explotación—en los próximos 30 días

Explotación activaNono figura en el catálogo de CISA

Exploit públicoNo conocidosin código público localizado

Se ha detectado una vulnerabilidad en a2aproject a2a-rs hasta la versión 0.4.3. Afecta a la función HttpPushSender del archivo crates/server/src/push_notification_sender.rs del componente Push Notification Handler. La manipulación del argumento TaskPushNotificationConfig provoca una falsificación de solicitud del lado del servidor (SSRF). El ataque puede lanzarse de forma remota. El nombre del parche es 2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224. Se recomienda aplicar un parche para corregir este problema.

Traducción automática del texto original de NVD (en inglés).

CVSS

Puntuación base: 6.9
Versión: 4.0
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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

Probabilidad de explotación (EPSS)

FIRST aún no ha puntuado esta CVE (habitual en CVEs muy recientes o rechazadas).

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 access90 %
Impacto principalT1090 Proxycommand and control75 %

Vector AV:N/PR:N/UI:N y CWE-918 (SSRF) en HttpPushSender; el atacante remoto puede forzar peticiones del servidor a destinos arbitrarios.

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 Traffic Vulnerability Scanning SSL/TLS Inspection Privileged Account Management Network Segmentation Network Intrusion Prevention

Tecnologías afectadas (1)

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

A2aproject — A2a-rs^AI

CWE

CWE-918

Referencias

Mostrar las 7 referencias

JSON original (NVD)

Mostrar

{
  "id": "CVE-2026-113704",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
          "integrityImpact": "LOW",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "LOW"
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        "impactScore": 3.4,
        "exploitabilityScore": 3.9
      }
    ],
    "cvssMetricV40": [
      {
        "type": "Secondary",
        "source": "cna@vuldb.com",
        "cvssData": {
          "Safety": "NOT_DEFINED",
          "version": "4.0",
          "Recovery": "NOT_DEFINED",
          "baseScore": 6.9,
          "Automatable": "NOT_DEFINED",
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/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": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "NONE",
          "subIntegrityImpact": "NONE",
          "vulnIntegrityImpact": "LOW",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "vulnAvailabilityImpact": "LOW",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "subConfidentialityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "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": "cna@vuldb.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:a2aproject:a2a-rs:*:*:*:*:*:*:*:*"
          ],
          "vendor": "a2aproject",
          "modules": [
            "Push Notification Handler"
          ],
          "product": "a2a-rs",
          "versions": [
            {
              "status": "affected",
              "version": "0.4.0"
            },
            {
              "status": "affected",
              "version": "0.4.1"
            },
            {
              "status": "affected",
              "version": "0.4.2"
            },
            {
              "status": "affected",
              "version": "0.4.3"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-10-20T22:19:29.230",
  "references": [
    {
      "url": "https://github.com/a2aproject/a2a-rs/",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://github.com/a2aproject/a2a-rs/commit/2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://github.com/a2aproject/a2a-rs/pull/124",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/cve/CVE-2026-113704",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/submit/1014883",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/vuln/422865",
      "source": "cna@vuldb.com"
    },
    {
      "url": "https://vuldb.com/vuln/422865/cti",
      "source": "cna@vuldb.com"
    }
  ],
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "cna@vuldb.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-918"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability has been found in a2aproject a2a-rs up to 0.4.3. This affects the function HttpPushSender of the file crates/server/src/push_notification_sender.rs of the component Push Notification Handler. Such manipulation of the argument TaskPushNotificationConfig leads to server-side request forgery. The attack may be launched remotely. The name of the patch is 2ba50176ea9f222d9a7d0f0e8cfe6fae7cf4c224. Applying a patch is advised to resolve this issue."
    }
  ],
  "lastModified": "2026-10-20T22:19:29.230",
  "sourceIdentifier": "cna@vuldb.com"
}