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High severity8.1NVD Advisory· Published Aug 6, 2026· Updated Aug 7, 2026

CVE-2026-57817

CVE-2026-57817

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

2
  • Apache/Cxf2 versions
    cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*range: <3.6.12
    • (no CPE)range: before 4.2.3, 4.1.x before 4.1.8, 3.6.x before 3.6.12

Patches

Vulnerability mechanics

References

2

News mentions

1