CVE-2026-57817 (GCVE-0-2026-57817)

Vulnerability from cvelistv5 – Published: 2026-08-06 10:24 – Updated: 2026-08-07 03:55
VLAI
Title
Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow
Summary
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.
Severity
8.1 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 00:00 UTC
CWE
  • CWE-20 - Improper Input Validation
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1010 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache CXF Affected: 4.2.0 , < 4.2.3 (semver)
Affected: 4.0.0 , < 4.1.8 (semver)
Affected: 0 , < 3.6.12 (semver)
guessed Create a notification for this product.
Credits
Guanping Zhang reported this vulnerability.
Show details on NVD website
To clipboard 

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