CVE-2026-82464CWE-601

CVE-2026-82464

Medium · published August 29, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
27.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
5.3 · 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
EPSS
0.00348 · 27.2th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-08-29T21:17Z
References (5)
https://github.com/pac4j/pac4j · [email protected]https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/engine/DefaultLogoutLogic.java · [email protected]https://github.com/pac4j/pac4j/commit/2270c3ff70e93cc43831e75702acd5135531237e · [email protected]https://www.pac4j.org/blog/security-advisory-pac4j-core-oidc-saml.html · [email protected]https://www.vulncheck.com/advisories/pac4j-core-before-6.5.6-open-redirect-via-backslash-logout · [email protected]
EPSS history
Timeline
  • 30 AUG 16:19Z
    EPSS moved — → 0%
    epss
  • 29 AUG 16:35Z
    pac4j-core before 6.5.6 Open Redirect via Backslash Logout
    cvelistv5