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CVE-2026-94612

Estado: AplazadaAlta (7.4)—

authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an authentik SAML Source verifies an assertion's signature and validity period but does not ensure that the identity provider issued the assertion for that Source or in response to a login request from that Source. The SAML Source also does not record already accepted assertions, allowing replay. An unauthenticated actor who possesses such a valid assertion can use an assertion intended for another service provider or reuse an earlier assertion to authenticate as the user named by the assertion. Only SAML Sources are affected; SAML Providers and other Source types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.

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.

Explotación de aplicación web expuesta (SAML Source) con validación incompleta de firmas. Impacto: obtención y reutilización de credenciales válidas para autenticación como usuario legítimo.

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 ManagementUser Account ManagementPassword PoliciesMulti-factor AuthenticationApplication Developer GuidanceActive Directory Configuration

Tecnologías afectadas (1)

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

Goauthentik — AuthentikAI

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-94612",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-94612",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-09-24T17:15:17.274740Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security-advisories@github.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.4,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "security-advisories@github.com",
      "affectedData": [
        {
          "vendor": "goauthentik",
          "product": "authentik",
          "versions": [
            {
              "status": "affected",
              "version": "< 2026.2.7"
            },
            {
              "status": "affected",
              "version": ">= 2026.5.0, < 2026.5.7"
            },
            {
              "status": "affected",
              "version": ">= 2026.8.0, < 2026.8.2"
            }
          ]
        }
      ]
    }
  ],
  "published": "2026-09-24T17:17:17.557",
  "references": [
    {
      "url": "https://docs.goauthentik.io/releases/2026.2#fixed-in-202627",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://docs.goauthentik.io/releases/2026.5#fixed-in-202657",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://docs.goauthentik.io/releases/2026.8#fixed-in-202682",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/287ea13cdc23c378abc20a7b71c9c7919a19a89a",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/355d8cc3d755fbba05fc5fa90ffbcbe6469acddd",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/54fac864a0b3bc00551af1908f662b3bf5cc6135",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/commit/984b0162711f0d1988ed33544d0a671c93e4ec76",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/25957",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/25962",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/25967",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/pull/25972",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2",
      "source": "security-advisories@github.com"
    },
    {
      "url": "https://github.com/goauthentik/authentik/security/advisories/GHSA-cqj8-fxxf-9pg7",
      "source": "security-advisories@github.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security-advisories@github.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-287"
        },
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an authentik SAML Source verifies an assertion's signature and validity period but does not ensure that the identity provider issued the assertion for that Source or in response to a login request from that Source. The SAML Source also does not record already accepted assertions, allowing replay. An unauthenticated actor who possesses such a valid assertion can use an assertion intended for another service provider or reuse an earlier assertion to authenticate as the user named by the assertion. Only SAML Sources are affected; SAML Providers and other Source types are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2."
    }
  ],
  "lastModified": "2026-09-24T19:39:45.600",
  "sourceIdentifier": "security-advisories@github.com"
}