Is CVE-2026-82461 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-82461?

CVE-2026-82461 has a CVSS v3 severity of HIGH (8.1).

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CVE-2026-82461

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.