FKIE_CVE-2026-94613

Vulnerability from fkie_nvd - Published: 2026-09-24 17:17 - Updated: 2026-09-24 17:17
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an unauthenticated attacker can submit a malformed SAML message to an authentik deployment using SAML in either the identity-provider or SAML source role. The message can stop the worker handling /application/saml/* or /source/saml/*, causing the requests assigned to that worker to fail. Worker process termination and automatic restart do not destroy database-backed sessions, but continued malicious messages can cause a sustained share of legitimate traffic to fail. Other protocol implementations are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2.
References
security-advisories@github.comhttps://docs.goauthentik.io/releases/2026.2#fixed-in-202627
security-advisories@github.comhttps://docs.goauthentik.io/releases/2026.5#fixed-in-202657
security-advisories@github.comhttps://docs.goauthentik.io/releases/2026.8#fixed-in-202682
security-advisories@github.comhttps://github.com/goauthentik/authentik/commit/03d19d63b8d8dd7bc3de7cf6e57c6df341a9fc86
security-advisories@github.comhttps://github.com/goauthentik/authentik/commit/4cf2f803b1c2ef38c224eead375fd057a10ee8ac
security-advisories@github.comhttps://github.com/goauthentik/authentik/commit/732adad26bb97361b6bf25ef138df5c16471ba1f
security-advisories@github.comhttps://github.com/goauthentik/authentik/commit/a029f5372295bfeb1e334855f78601681cdc9a2d
security-advisories@github.comhttps://github.com/goauthentik/authentik/pull/25959
security-advisories@github.comhttps://github.com/goauthentik/authentik/pull/25964
security-advisories@github.comhttps://github.com/goauthentik/authentik/pull/25969
security-advisories@github.comhttps://github.com/goauthentik/authentik/pull/25974
security-advisories@github.comhttps://github.com/goauthentik/authentik/releases/tag/version/2026.2.7
security-advisories@github.comhttps://github.com/goauthentik/authentik/releases/tag/version/2026.5.7
security-advisories@github.comhttps://github.com/goauthentik/authentik/releases/tag/version/2026.8.2
security-advisories@github.comhttps://github.com/goauthentik/authentik/security/advisories/GHSA-cxwx-9x59-28qm
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "authentik",
          "vendor": "goauthentik",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2026.2.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.5.0, \u003c 2026.5.7"
            },
            {
              "status": "affected",
              "version": "\u003e= 2026.8.0, \u003c 2026.8.2"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "authentik is an open-source identity provider. Prior to 2026.2.7, 2026.5.7, and 2026.8.2, an unauthenticated attacker can submit a malformed SAML message to an authentik deployment using SAML in either the identity-provider or SAML source role. The message can stop the worker handling /application/saml/* or /source/saml/*, causing the requests assigned to that worker to fail. Worker process termination and automatic restart do not destroy database-backed sessions, but continued malicious messages can cause a sustained share of legitimate traffic to fail. Other protocol implementations are not affected. This issue is fixed in versions 2026.2.7, 2026.5.7, and 2026.8.2."
    }
  ],
  "id": "CVE-2026-94613",
  "lastModified": "2026-09-24T17:17:17.723",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-24T17:17:17.723",
  "references": [
    {
      "source": "security-advisories@github.com",
      "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/03d19d63b8d8dd7bc3de7cf6e57c6df341a9fc86"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/commit/4cf2f803b1c2ef38c224eead375fd057a10ee8ac"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/commit/732adad26bb97361b6bf25ef138df5c16471ba1f"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/commit/a029f5372295bfeb1e334855f78601681cdc9a2d"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/pull/25959"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/pull/25964"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/pull/25969"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/goauthentik/authentik/pull/25974"
    },
    {
      "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-cxwx-9x59-28qm"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Primary"
    }
  ]
}



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