{"id":"CVE-2026-80465","state":"PUBLISHED","title":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 9","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.29). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations.","publishedAt":"2026-09-03T11:25:10.771Z","updatedAt":"2026-10-26T10:40:59.986Z","severity":{"score":8.8,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","source":"siemens"},"assigner":"siemens","products":["Siemens Mendix SAML (Mendix 10 compatible)","Siemens Mendix SAML (Mendix 11 compatible)","Siemens Mendix SAML (Mendix 9.24 compatible)"],"affected":[{"vendor":"Siemens","product":"Mendix SAML (Mendix 10 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V4.2.4","versionType":"custom"}]},{"vendor":"Siemens","product":"Mendix SAML (Mendix 11 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V4.2.4","versionType":"custom"}]},{"vendor":"Siemens","product":"Mendix SAML (Mendix 9.24 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V3.6.29","versionType":"custom"}]}],"references":["https://cert-portal.siemens.com/productcert/html/ssa-887643.html"],"weaknesses":["CWE-347"],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80465.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80465","state":"PUBLISHED","datePublished":"2026-09-03T11:25:10.771Z","dateUpdated":"2026-10-26T10:40:59.986Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2026-08-26T12:49:28.232Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions < V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions < V3.6.29). Affected versions of the module do not properly validate the SAML response signature. This could allow unauthenticated remote attackers to hijack an account (session) in specific SSO configurations."}],"affected":[{"vendor":"Siemens","product":"Mendix SAML (Mendix 10 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V4.2.4","versionType":"custom"}]},{"vendor":"Siemens","product":"Mendix SAML (Mendix 11 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V4.2.4","versionType":"custom"}]},{"vendor":"Siemens","product":"Mendix SAML (Mendix 9.24 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V3.6.29","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-887643.html"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","baseScore":8.7,"baseSeverity":"HIGH"}},{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","baseScore":8.8,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-347","lang":"en","description":"CWE-347: Improper Verification of Cryptographic Signature","type":"CWE"}]}],"providerMetadata":{"shortName":"siemens","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateUpdated":"2026-10-26T10:40:59.986Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-03T18:15:27.716259Z","id":"CVE-2026-80465","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-03T18:15:38.743Z"}}]}}}