{"id":"CVE-2026-80465","aliases":["EUVD-2026-70411","GHSA-249p-r5w7-w969"],"status":"published","title":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.3)...","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions \u003c 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.","severity":{"version":"4.0","score":8.8,"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00276,"percentile":0.20189,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-347"],"published":"2026-09-03T11:25:10Z","modified":"2026-10-26T11:16:38Z","products":[{"vendor":"siemens","product":"mendix saml (mendix 10 compatible)"},{"vendor":"siemens","product":"mendix saml (mendix 11 compatible)"},{"vendor":"siemens","product":"mendix saml (mendix 9.24 compatible)"}],"references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-887643.html"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80465"},{"url":"https://github.com/advisories/GHSA-249p-r5w7-w969"}],"sources":{"cve":[{"id":"CVE-2026-80465","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions \u003c 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.","status":"published","published":"2026-09-03T11:25:10.771Z","modified":"2026-10-26T10:40:59.986Z","cvss":[{"version":"4.0","score":8.8,"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","level":"high","assessor":"cna"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T13:45:36.695039Z"}],"euvd":[{"id":"EUVD-2026-70411","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions \u003c 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.","status":"published","published":"2026-09-03T11:25:10Z","modified":"2026-10-26T10:40:59Z","cvss":[{"version":"4.0","score":8.8,"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","level":"high"}],"updated_at":"2026-11-02T16:59:29.915597Z"}],"ghsa":[{"id":"GHSA-249p-r5w7-w969","title":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.3)...","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.3), Mendix SAML (Mendix 11 compatible) (All versions \u003c V4.2.3), Mendix SAML (Mendix 9.24 compatible) (All versions \u003c V3.6.27). 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.","status":"published","published":"2026-09-03T15:32:13Z","modified":"2026-09-03T15:32:19Z","cvss":[{"version":"4.0","score":8.8,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T15:11:19.170234Z"}],"nvd":[{"id":"CVE-2026-80465","description":"A vulnerability has been identified in Mendix SAML (Mendix 10 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 11 compatible) (All versions \u003c V4.2.4), Mendix SAML (Mendix 9.24 compatible) (All versions \u003c 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.","status":"published","published":"2026-09-03T13:06:10.877Z","modified":"2026-10-26T11:16:38.283Z","cvss":[{"version":"4.0","score":8.8,"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":8.7,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-347"],"updated_at":"2026-11-02T14:12:43.399612Z"}]}}