VULNERABILITY INTELLIGENCE
CVE-2026-82461
CVSS score8.1 HIGH
EPSS probability0.32%
CISA KEVNot currently listed
Published2026-08-29
Last modified2026-09-10
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Description
pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client roles. Attackers can forge access tokens with administrative roles paired with valid ID tokens to bypass authorization checks in applications relying on pac4j role validation.
Weakness classification
- disclosure@vulncheck.com: CWE-347