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CVE-2026-57817

Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Apache Software Foundation / Apache CXFaffected 4.2.0 before 4.2.3; affected 4.0.0 before 4.1.8; affected 0 before 3.6.12

CWE

CWE-20

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.

CVE

No English description supplied.