{"id":"CVE-2026-87004","revision":"3928a3dfff2c4ef08e56ca9d386a07cc","records":[{"revision":"3928a3dfff2c4ef08e56ca9d386a07cc","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-87004","aliases":[],"title":"Tugtainer: OIDC id_token claims accepted without signature/audience/expiry verification","description":"Tugtainer is a self-hosted app for automating updates of Docker containers. Prior to version 1.31.3, when the OIDC login flow completes, backend/modules/auth/providers/auth_oidc_provider.py decodes the id_token returned by the identity provider's token endpoint using jose.jwt.get_unverified_claims() instead of jwt.decode(). This skips signature verification, audience (aud) validation, issuer (iss) validation, and expiry (exp) checking entirely. The extracted claims (email/sub/preferred_username) are then used directly as the user_id for the resulting Tugtainer session. This issue has been patched in version 1.31.3.","state":0,"publishedAt":"2026-09-30T17:01:24.963+00:00","modifiedAt":"2026-09-30T18:01:20.063+00:00","affected":[{"ecosystem":"Vendor product","name":"tugtainer","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"Quenary\",\n                    \"product\": \"tugtainer\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 1.31.3\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1,"severity":"HIGH"}],"references":["https://github.com/Quenary/tugtainer/security/advisories/GHSA-crjc-6vc7-xrfh","https://github.com/Quenary/tugtainer/commit/b55269b6a3bfd43b0f2f5bd5f137ee0c81b7c2e4","https://github.com/Quenary/tugtainer/releases/tag/v1.31.3"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-87004","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-87004","identifiers":["CVE-2026-87004"]},"retained":false,"historicalAffected":[]}],"coverage":[]}