Origin Validation Error 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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Test your applications- Snyk IDSNYK-JAVA-ORGPAC4J-19435165
- published31 Aug 2026
- disclosed29 Aug 2026
- creditUnknown
Introduced: 29 Aug 2026
NewCVE-2026-82462 (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 Origin Validation Error in the OIDC callback handling. An attacker can gain unauthorized access by substituting an access token minted for another client, thereby creating authenticated sessions without proper issuer, audience, nonce, or subject verification.