{"id":"CVE-2026-89209","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 compatible) (All versions < V3.6.29). Affected versions of the module do not properly protect against SAML assertion replay in IdP-initiated authentication flows. This could allow unauthenticated remote attackers to gain unauthorized access to the application by replaying a valid SAML response.","publishedAt":"2026-10-26T10:41:01.088Z","updatedAt":"2026-10-26T10:41:01.088Z","severity":{"score":7.6,"label":"High","version":"4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","source":"siemens"},"assigner":"siemens","products":["Siemens Mendix SAML (Mendix 10 compatible)","Siemens Mendix SAML (Mendix 11 compatible)","Siemens Mendix SAML (Mendix 9 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 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V3.6.29","versionType":"custom"}]}],"references":["https://cert-portal.siemens.com/productcert/html/ssa-137528.html"],"weaknesses":["CWE-294"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/89xxx/CVE-2026-89209.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-89209","state":"PUBLISHED","datePublished":"2026-10-26T10:41:01.088Z","dateUpdated":"2026-10-26T10:41:01.088Z","assignerShortName":"siemens","assignerOrgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateReserved":"2026-09-11T07:45:20.919Z"},"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 compatible) (All versions < V3.6.29). Affected versions of the module do not properly protect against SAML assertion replay in IdP-initiated authentication flows. This could allow unauthenticated remote attackers to gain unauthorized access to the application by replaying a valid SAML response."}],"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 compatible)","defaultStatus":"unknown","versions":[{"version":"0","status":"affected","lessThan":"V3.6.29","versionType":"custom"}]}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-137528.html"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","baseScore":6.8,"baseSeverity":"MEDIUM"}},{"cvssV4_0":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","baseScore":7.6,"baseSeverity":"HIGH"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-294","lang":"en","description":"CWE-294: Authentication Bypass by Capture-replay","type":"CWE"}]}],"providerMetadata":{"shortName":"siemens","orgId":"cec7a2ec-15b4-4faf-bd53-b40f371f3a77","dateUpdated":"2026-10-26T10:41:01.088Z"}}}}}