Auth bypass in Pac4j
CVE-2026-82463
pac4j-core before 6.5.6 contains an authentication bypass vulnerability in CheckProfileTypeAuthorizer that reverses the profile type validation logic. Attackers can authenticate through a weaker client and access resources requiring a stronger profile type by satisfying generic profile checks.
Vulnerability class: Broken Access Control
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (technical-description)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-82463?
- CVE-2026-82463 is a high-severity vulnerability in Pac4j, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-08-29.
- How severe is CVE-2026-82463?
- High severity. CVSS v3 base score is 8.1 out of 10.