{"id":"CVE-2026-123540","title":"OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST","summary":"OpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controll…","severity":"low","cvss":2,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:L/A:N","cvssSource":"cna","cwe":["CWE-116"],"vendor":"OpenIdentityPlatform","product":"OpenAM","affected":["OpenAM < 16.1.4"],"published":"2026-11-08","updated":"2026-11-08","sourceUpdated":"2026-11-08T01:37:46.615Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-123540","references":[{"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-pw99-8h4m-p3gm","label":"GitHub Security Advisory (GHSA-pw99-8h4m-p3gm)"},{"url":"https://www.vulncheck.com/advisories/openam-before-16.1.4-incomplete-attribute-encoding-in-saml-1-x-form-post","label":"VulnCheck Advisory: OpenAM before 16.1.4 Incomplete Attribute Encoding in SAML 1.x Form POST"}],"tags":["cve.org"],"ingestedAt":"2026-11-08T02:43:18.679Z","slug":"CVE-2026-123540","body":"## Overview\n\nOpenAM before 16.1.4 contains an incomplete output encoding vulnerability that allows a SAML 1.x identity provider to alter attribute values by injecting unencoded content into the service provider auto-submitted form. Attackers controlling a trusted identity provider can craft assertion attribute names or values that reach the target application in modified form, undermining the integrity of received attributes.\n\n## Affected\n\n- `OpenAM < 16.1.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":11,"depthScoreParts":{"impact":11,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}