Incorrect Implementation of Authentication Algorithm Affecting cxf package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.69% (51st percentile)

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  • Snyk IDSNYK-RHEL7-CXF-18614552
  • published11 Aug 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

CVE-2026-57817  (opens in a new tab)
CWE-303  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:7 cxf.

NVD Description

Note: Versions mentioned in the description apply only to the upstream cxf package and not the cxf package as distributed by RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1