{"id":"CVE-2026-94613","revision":"c71f6d6dce1744cbbb7cfa7cdc53f039","records":[{"revision":"c71f6d6dce1744cbbb7cfa7cdc53f039","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-94613","aliases":[],"title":"authentik: Denial of Service via Document Type Declarations in SAML Messages","description":"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.","state":0,"publishedAt":"2026-09-24T16:13:17.785+00:00","modifiedAt":"2026-09-29T02:53:23.285+00:00","affected":[{"ecosystem":"Vendor product","name":"authentik","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"goauthentik\",\n                    \"product\": \"authentik\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 2026.2.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2026.5.0, < 2026.5.7\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 2026.8.0, < 2026.8.2\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5,"severity":"HIGH"}],"references":["https://github.com/goauthentik/authentik/security/advisories/GHSA-cxwx-9x59-28qm","https://github.com/goauthentik/authentik/pull/25959","https://github.com/goauthentik/authentik/pull/25964","https://github.com/goauthentik/authentik/pull/25969","https://github.com/goauthentik/authentik/pull/25974","https://github.com/goauthentik/authentik/commit/03d19d63b8d8dd7bc3de7cf6e57c6df341a9fc86","https://github.com/goauthentik/authentik/commit/4cf2f803b1c2ef38c224eead375fd057a10ee8ac","https://github.com/goauthentik/authentik/commit/732adad26bb97361b6bf25ef138df5c16471ba1f","https://github.com/goauthentik/authentik/commit/a029f5372295bfeb1e334855f78601681cdc9a2d","https://docs.goauthentik.io/releases/2026.2#fixed-in-202627","https://docs.goauthentik.io/releases/2026.5#fixed-in-202657","https://docs.goauthentik.io/releases/2026.8#fixed-in-202682","https://github.com/goauthentik/authentik/releases/tag/version/2026.2.7","https://github.com/goauthentik/authentik/releases/tag/version/2026.5.7","https://github.com/goauthentik/authentik/releases/tag/version/2026.8.2"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-94613","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-94613","identifiers":["CVE-2026-94613"]},"retained":false,"historicalAffected":[]}],"coverage":[]}