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TI-2026-45301 Aliases CVE-2026-63687GHSA-7hjx-472h-3f7q

Apache CXF: JwtRequestCodeFilter silently overrides outer PKCE and nonce parameters

Priority MEDIUM 47CWE-345Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Partial Red Hat: 1 fixed, 3 without a fix

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-345.

Summary

Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT (e.g., one whose client_secret is known or compromised) can thereby substitute the code_challenge, code_challenge_method, nonce, and state values that were set in the outer HTTP request, undermining PKCE integrity and OpenID Connect replay protection. 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 0.00282 20th 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, 3 without a fix

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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: Important. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Fuse 7AffectedNo fix planned: Will not 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-2026-63687
  2. 2026-10-03 Alias added: GHSA-7hjx-472h-3f7q

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