CVE-2026-82463
pac4j-core before 6.5.6 Authorization Bypass via Reversed Profile Type Check
- State
- Published
- Severity
- 8.6 High
- Published
- Aug 29, 2026
- Updated
- Sep 2, 2026
- Reserved
- Aug 29, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N | VulnCheck |
Weaknesses
- CWE-863 Incorrect Authorization
Affected Products
| Product | Versions |
|---|---|
pac4jpac4j |
|
References
- Patch Commitpatch
- pac4j Security Advisory for pac4j-core, pac4j-oidc and pac4j-samlvendor-advisory
- https://github.com/pac4j/pac4j/blob/pac4j-parent-6.5.5/pac4j-core/src/main/java/org/pac4j/core/authorization/authorizer/CheckProfileTypeAuthorizer.javatechnical-description
- https://github.com/pac4j/pac4jproduct
- VulnCheck Advisory: pac4j-core before 6.5.6 Authorization Bypass via Reversed Profile Type Checkthird-party-advisory
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