UNKNOWN NVD

CVE-2026-57817

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the `c_hash` parameter when operating in the Hybrid Flow. If an Apache CXF RP is in

The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the `c_hash` parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider (IdP) that omits the `c_hash`, the RP becomes vulnerable to Authorization Code Substitution/Injection attacks. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.

References

https://lists.apache.org/thread/pj63c3pf7kkp1xhr53do704fwj3t3htn

Published: 2026-08-06 · Source: NVD · Feed updated: 2026-08-06

This unknown severity vulnerability was published on 2026-08-06 via NVD.

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