{
"id": "GHSA-f668-xfp8-vhf5",
"aliases": [
"CVE-2026-82464"
],
"details": "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 external hosts that browsers normalize into network-path references, redirecting victims to attacker-controlled sites after logout.",
"affected": [],
"modified": "2026-08-29T18:31:31Z",
"severity": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
},
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/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"
}
],
"published": "2026-08-29T18:31:31Z",
"references": [
{
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-82464",
"type": "ADVISORY"
},
{
"url": "https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e",
"type": "WEB"
},
{
"url": "https://github.com/pac4j/pac4j",
"type": "WEB"
},
{
"url": "https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java",
"type": "WEB"
},
{
"url": "https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html",
"type": "WEB"
},
{
"url": "https://www.vulncheck.com/advisories/pac4j-core-before-6.5.6-open-redirect-via-backslash-logout",
"type": "WEB"
}
],
"schema_version": "1.4.0",
"database_specific": {
"cwe_ids": [
"CWE-601"
],
"severity": "MODERATE",
"github_reviewed": false,
"nvd_published_at": "2026-08-29T17:17:58Z",
"github_reviewed_at": null
}
}