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CVE-2026-40964

Estado: Pendiente de análisisAlta (7.5)—

Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log and metric for every application and platform component via minting a JWT that the cf-auth-proxy accepts as a valid logs.admin token.

Affected versions: - log-cache_release: all versions through v3.2.6 (inclusive); fixed in v3.2.7 or later - CF Deployment: all versions through v55.?.0 (inclusive); fixed in v55.?.0 or later (bundles log-cache_release v3.2.7)

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.

CWE-287 (autenticación débil) + AV:N/PR:N: acceso remoto sin privilegios permite falsificar JWT válido para obtener token admin. Consigue acceso de lectura a logs/métricas (T1005) con credenciales falsas (T1078).

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

Privileged Account ManagementApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser TrainingUser Account Management

Tecnologías afectadas (2)

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

Cloudfoundry — Cf-auth-proxyAICloudfoundry — Log-cache ReleaseAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-40964",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-40964",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-02T13:11:40.431179Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@vmware.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:H/I:N/A:N",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "security@vmware.com",
      "affectedData": [
        {
          "vendor": "Cloud Foundry Foundation",
          "product": "log-cache_release",
          "versions": [
            {
              "status": "affected",
              "version": "2.7.0",
              "versionType": "custom",
              "lessThanOrEqual": "3.2.6"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Cloud Foundry Foundation",
          "product": "CF Deployment",
          "versions": [
            {
              "status": "affected",
              "version": "12.44.0",
              "versionType": "custom",
              "lessThanOrEqual": "55.2.0"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-06-01T22:16:25.463",
  "references": [
    {
      "url": "https://www.cloudfoundry.org/blog/cve-2026-40964-read-access-to-cf-logs/",
      "source": "security@vmware.com"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@vmware.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Authentication Bypass in cf-auth-proxy in Cloud Foundry Foundation all installations allows an unauthenticated remote attacker to gain read access to every log and metric for every application and platform component via minting a JWT that the cf-auth-proxy accepts as a valid logs.admin token.\n\nAffected versions:\n- log-cache_release: all versions through v3.2.6 (inclusive); fixed in v3.2.7 or later\n- CF Deployment: all versions through v55.?.0 (inclusive); fixed in v55.?.0 or later (bundles log-cache_release v3.2.7)"
    },
    {
      "lang": "es",
      "value": "Omisión de autenticación en cf-auth-proxy en todas las instalaciones de Cloud Foundry Foundation permite a un atacante remoto no autenticado obtener acceso de lectura a cada registro y métrica para cada aplicación y componente de plataforma mediante la creación de un JWT que el cf-auth-proxy acepta como un token logs.admin válido.\n\nVersiones afectadas:\n- log-cache_release: todas las versiones hasta la v3.2.6 (inclusive); corregido en la v3.2.7 o posterior\n- CF Deployment: todas las versiones hasta la v55.?.0 (inclusive); corregido en la v55.?.0 o posterior (incluye log-cache_release v3.2.7)"
    }
  ],
  "lastModified": "2026-07-22T18:10:00.117",
  "sourceIdentifier": "security@vmware.com"
}