CVE-2026-82461 — pac4j-oidc before 6.5.6 Privilege Escalation via Unverified Keycloak Access Token
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…
Published: 2026-08-29 · CVSS: 8.6 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7