{"id":"CVE-2026-82464","title":"pac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern","summary":"pac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern. Attackers can craft logout links with backslash-prefixed e…","severity":"medium","cvss":6.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","cwe":["CWE-601"],"published":"2026-08-29","updated":"2026-09-10","sourceUpdated":"2026-09-10T19:54:25.810","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-82464","references":[{"url":"https://github.com/pac4j/pac4j","label":"disclosure@vulncheck.com"},{"url":"https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java","label":"disclosure@vulncheck.com"},{"url":"https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e","label":"disclosure@vulncheck.com"},{"url":"https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/pac4j-core-before-6.5.6-open-redirect-via-backslash-logout","label":"disclosure@vulncheck.com"}],"tags":["nvd"],"epss":0.002,"epssPercentile":0.10079,"ingestedAt":"2026-08-30T12:52:23.644Z","slug":"CVE-2026-82464","body":"## Overview\n\npac4j-core before 6.5.6 contains an open redirect vulnerability in DefaultLogoutLogic.perform() that accepts backslash-prefixed logout redirect targets matching logoutUrlPattern. Attackers can craft logout links with backslash-prefixed external hosts that browsers normalize into network-path references, redirecting victims to attacker-controlled sites after logout.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":34,"depthScoreParts":{"impact":33.6,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}