Improper Verification of Cryptographic Signature Affecting org.pac4j:pac4j-oidc package, versions [,6.5.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published31 Aug 2026
- disclosed29 Aug 2026
- creditUnknown
Introduced: 29 Aug 2026
NewCVE-2026-82461 (opens in a new tab)How to fix?
Upgrade org.pac4j:pac4j-oidc to version 6.5.6 or higher.
Overview
Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature when extracting Keycloak realm and client roles due to missing verification of access token signatures, issuers, audiences, or expiry. An attacker can gain unauthorized privileges by forging access tokens with elevated roles paired with valid ID tokens.