{"id":"CVE-2026-45795","state":"PUBLISHED","title":"Janssen Project: JWE Request Object Signature Verification Bypass in jans-auth-server","description":"The Janssen Project is an open-source identity and access management (IAM) platform. Prior to 2.0.0, jans-auth-server accepts unsigned JWE request objects because JwtAuthorizationRequest skips inner signature validation when jwe.getSignedJWTPayload() returns null, and AuthzRequestService.processRequestObject() does not reject the unrecognized RSA-OAEP algorithm when forceSignedRequestObject=true. This issue is fixed in version 2.0.0.","publishedAt":"2026-07-16T16:35:58.581Z","updatedAt":"2026-07-16T18:06:23.420Z","severity":{"score":5.3,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","source":"GitHub_M"},"assigner":"GitHub_M","products":["JanssenProject jans"],"affected":[{"vendor":"JanssenProject","product":"jans","versions":[{"version":"< 2.0.0","status":"affected"}]}],"references":["https://github.com/JanssenProject/jans/security/advisories/GHSA-r3gj-4pj2-9j3j","https://github.com/JanssenProject/jans/pull/13438","https://github.com/JanssenProject/jans/commit/0cdd214870ee30eb2186261f21c85b9e9fc63b5c","https://github.com/JanssenProject/jans/releases/tag/v2.0.0"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:12:07.131Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/45xxx/CVE-2026-45795.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-45795","state":"PUBLISHED","datePublished":"2026-07-16T16:35:58.581Z","dateUpdated":"2026-07-16T18:06:23.420Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-13T08:19:32.603Z"},"containers":{"cna":{"title":"Janssen Project: JWE Request Object Signature Verification Bypass in jans-auth-server","descriptions":[{"lang":"en","value":"The Janssen Project is an open-source identity and access management (IAM) platform. Prior to 2.0.0, jans-auth-server accepts unsigned JWE request objects because JwtAuthorizationRequest skips inner signature validation when jwe.getSignedJWTPayload() returns null, and AuthzRequestService.processRequestObject() does not reject the unrecognized RSA-OAEP algorithm when forceSignedRequestObject=true. This issue is fixed in version 2.0.0."}],"affected":[{"vendor":"JanssenProject","product":"jans","versions":[{"version":"< 2.0.0","status":"affected"}]}],"references":[{"url":"https://github.com/JanssenProject/jans/security/advisories/GHSA-r3gj-4pj2-9j3j","name":"https://github.com/JanssenProject/jans/security/advisories/GHSA-r3gj-4pj2-9j3j","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/JanssenProject/jans/pull/13438","name":"https://github.com/JanssenProject/jans/pull/13438","tags":["x_refsource_MISC"]},{"url":"https://github.com/JanssenProject/jans/commit/0cdd214870ee30eb2186261f21c85b9e9fc63b5c","name":"https://github.com/JanssenProject/jans/commit/0cdd214870ee30eb2186261f21c85b9e9fc63b5c","tags":["x_refsource_MISC"]},{"url":"https://github.com/JanssenProject/jans/releases/tag/v2.0.0","name":"https://github.com/JanssenProject/jans/releases/tag/v2.0.0","tags":["x_refsource_MISC"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-07-16T16:35:58.581Z"},"source":{"advisory":"GHSA-r3gj-4pj2-9j3j","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/JanssenProject/jans/security/advisories/GHSA-r3gj-4pj2-9j3j","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-16T18:05:48.605170Z","id":"CVE-2026-45795","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-07-16T18:06:23.420Z"}}]}}}