CVE WatchAug 29, 2026

CVE-2026-82461

pac4j-oidc before 6.5.6 fails to verify access token signatures, issuers, audiences, or expiry when extracting Keycloak realm and client rol

CVSS

8.1

High

EPSS

—

KEV

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Exploit Today

—

0-100

Published: Aug 29, 2026 · Last modified: Aug 29, 2026 · CWE-347

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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