{"id":"CVE-2026-48717","title":"Open Access Management (OpenAM) is an access management solution","summary":"Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a code_verifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization co…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N","cwe":["CWE-285"],"vendor":"OpenIdentityPlatform","product":"OpenAM","affected":["OpenAM < 16.1.1"],"patched":["org.openidentityplatform.openam:openam-oauth2 16.1.1"],"published":"2026-09-15","updated":"2026-09-15","sourceUpdated":"2026-09-15T14:16:55.147","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-48717","references":[{"url":"https://github.com/OpenIdentityPlatform/OpenAM/commit/97a34d9fee17395e8e052bfc45eb5855f436153e","label":"security-advisories@github.com"},{"url":"https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1","label":"security-advisories@github.com"},{"url":"https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-4v2w-2wqp-mc85","label":"security-advisories@github.com"},{"url":"https://github.com/advisories/GHSA-4v2w-2wqp-mc85"}],"tags":["nvd","cve.org","ghsa","maven"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-15T13:25:12.374530Z"},"cvssSource":"cna","epss":0.00327,"epssPercentile":0.25957,"ecosystem":"maven","ingestedAt":"2026-06-29T21:48:47.456Z","slug":"CVE-2026-48717","body":"## Overview\n\nOpen Access Management (OpenAM) is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a code_verifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization code stores a code_challenge. Because that setting is disabled by default, an attacker who intercepts a PKCE-protected authorization code can omit code_verifier and redeem the code, while an explicitly incorrect verifier is rejected. Public clients are directly affected, and confidential-client exploitation additionally requires client authentication material or another redemption context. This issue is fixed in version 16.1.1.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-48717)\n\nAffected packages:\n\n- `org.openidentityplatform.openam:openam-oauth2 <= 16.0.6`\n\nPatched in:\n\n- `org.openidentityplatform.openam:openam-oauth2 16.1.1`\n\nSource: https://github.com/advisories/GHSA-4v2w-2wqp-mc85","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":203557,"id":"CVE-2026-48717","ts":1789468562525,"field":"cvss","old":null,"new":"9.1"},{"seq":203556,"id":"CVE-2026-48717","ts":1789468562525,"field":"severity","old":"medium","new":"critical"}]}