{"affected":[{"defaultStatus":"unaffected","ecosystem":"maven","packageName":"org.openidentityplatform.openam/openam-federation-library","product":"OpenAM","source":"CNA: VulnCheck","vendor":"OpenIdentityPlatform","versions":[{"lessThan":"16.1.4","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"16.1.4","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"maven","packageName":"org.openidentityplatform.openam/openam-auth-saml2","product":"OpenAM","source":"CNA: VulnCheck","vendor":"OpenIdentityPlatform","versions":[{"lessThan":"16.1.4","status":"affected","version":"0","versionType":"semver"},{"status":"unaffected","version":"16.1.4","versionType":"semver"}]}],"cveId":"CVE-2026-123550","cwes":["CWE-290"],"description":"OpenAM before 16.1.4 contains an authentication bypass vulnerability in its SAML v2.0 service provider that accepts unsigned assertions on the ECP (PAOS) and HTTP-Artifact bindings when WantAssertionsSigned is false. Unauthenticated remote attackers can submit forged assertions to obtain sessions as any mapped user, including administrators, and hijack single sign-on to dependent applications.","epss":{"date":"2026-11-09","percentile":0.46847,"score":0.00559},"exploits":[],"kev":null,"metrics":[{"score":9.3,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":9.8,"severity":"critical","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},{"score":9.3,"severity":"critical","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/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","version":"4.0"},{"score":9.8,"severity":"critical","source":"NVD: disclosure@vulncheck.com","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}],"modifiedAt":1794232733766,"publishedAt":1794101874178,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-3j2f-qhrc-rjfj"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/openam-before-16.1.4-saml-authentication-bypass-via-unsigned-assertions"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-3j2f-qhrc-rjfj"},{"source":"disclosure@vulncheck.com","tags":[],"url":"https://www.vulncheck.com/advisories/openam-before-16.1.4-saml-authentication-bypass-via-unsigned-assertions"}],"remediation":[],"revision":"61381b063c291fef00a51c635bdc38ec05ae6891619602f805fb70a1586ed47b","sources":[{"modifiedAt":1794232733766,"name":"CNA: VulnCheck","retrievedAt":1794233351564,"url":"https://www.cve.org/CVERecord?id=CVE-2026-123550"},{"modifiedAt":1794104206410,"name":"NVD","retrievedAt":1794118572992,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123550"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1794237013687,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-123550"}],"ssvc":{"assessedAt":1794232724479,"automatable":"yes","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"OpenAM before 16.1.4 SAML Authentication Bypass via Unsigned Assertions","updatedAt":1794237013687}