Read the docs
TI-2026-41638 Aliases CVE-2026-57817GHSA-h8f8-97w2-2925

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

Priority LOW 38CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Partial Red Hat: 1 fixed, 2 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat.

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00692 53rd percentileScored 2026-11-07
Fix Partial Apache CXF (Apache Software Foundation): 4.2.3, 4.1.8, 3.6.12Red Hat: 1 advisoryRed Hat: 1 fixed, 2 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache CXF4.2.0 to before 4.2.3; 4.0.0 to before 4.1.8; before 3.6.124.2.3, 4.1.8, 3.6.12Patch availableCNA
  • Apache CXF VendorApache Affected 4.2.0 to before 4.2.3; 4.0.0 to before 4.1.8; before 3.6.12 Fixed in 4.2.3, 4.1.8, 3.6.12 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*before 3.6.12; 4.0.0 to before 4.1.8; 4.2.0 to before 4.2.3VulnerableApache
  • cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* Versions before 3.6.12; 4.0.0 to before 4.1.8; 4.2.0 to before 4.2.3 Vulnerable ·Apache

Remediation

  • Fix · CNA Apache CXF (Apache Software Foundation) Fixed in 4.2.3, 4.1.8, 3.6.12

Red Hat 1 advisory

  • RHSA-2026:71675 Released 2026-09-24 · Red Hat rating Important
    Red Hat Build of Apache Camel 4.18.4 for Spring Boot release.
    • Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    Apache CXF 3.6.12, 4.1.8, 4.2.3

    12 records Highest priority Priority MEDIUM 10 MEDIUM, 2 LOW

    Other records, highest priority first

    • TI-2026-47481 Apache CXF: Unsafe deserialization of inbound JMS ObjectMessagePriority MEDIUM 51
    • TI-2026-47860 Apache CXF: DefaultEncryptingCodeDataProvider allows unlimited authorization code replayPriority MEDIUM 50
    • TI-2026-46751 Apache CXF: Self-issued ID token claims validation skippedPriority MEDIUM 47
    Show all 12 records →

Vendor assessments

Red Hat

Red Hat rating: Low. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat JBoss Enterprise Application Platform 7AffectedNo fix planned: Out of support scope
Red Hat JBoss Web Server 5AffectedNo fix planned: Out of support scope
Red Hat build of Apache Camel 4.18.4 for Spring Boot 3.5.16Fixed RHSA-2026:71675

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-57817
  2. 2026-10-03 Alias added: GHSA-h8f8-97w2-2925
  3. 2026-10-16 Affected versions changed · Red Hat

References

Advisory 1

  • TI-2019-09264 Incorrect authorization in Apache CXF CVSS 3.1CRITICAL 9.8
  • TI-2020-10930 Apache CXF Reflected XSS in the services listing page via the styleSheetPath CVSS 3.1MEDIUM 6.1
  • TI-2010-01990 Apache CXF 2.0.x before 2.0.13, 2.1.x before 2.1.10, and 2.2.x before 2.2.9, as used in… CVSS 3.1CRITICAL 9.8
  • TI-2022-22907 Apache CXF SSRF Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2026-47481 Apache CXF: Unsafe deserialization of inbound JMS ObjectMessage CVSS 3.1CRITICAL 9.8
  • TI-2025-31053 Apache CXF: Untrusted JMS configuration can lead to RCE CVSS 3.1CRITICAL 9.8
See all 79 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences