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TI-2026-37317 Aliases CVE-2026-50627GHSA-9mrv-8pvf-hf4m

Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator

Priority MEDIUM 48CWE-289Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
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, GitHub and Red Hat.

Summary

The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.04364 91st percentileScored 2026-11-07
Fix Partial Apache CXF (Apache Software Foundation): 4.2.2, 4.1.7, 3.6.12org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven): 4.2.2, 4.1.7Red 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 4.2.2; 4.0.0 to before 4.1.7; before 3.6.124.2.2, 4.1.7, 3.6.12Patch availableCNA
—org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven)4.2.0 to before 4.2.24.2.2Patch availableGHSA-9mrv-8pvf-hf4m
—org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven)before 4.1.74.1.7Patch availableGHSA-9mrv-8pvf-hf4m
  • Apache CXF VendorApache Affected 4.2.0 to before 4.2.2; 4.0.0 to before 4.1.7; before 3.6.12 Fixed in 4.2.2, 4.1.7, 3.6.12 Patch available CNA
  • org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven) Vendor— Affected 4.2.0 to before 4.2.2 Fixed in 4.2.2 Patch available GHSA-9mrv-8pvf-hf4m
  • org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven) Vendor— Affected before 4.1.7 Fixed in 4.1.7 Patch available GHSA-9mrv-8pvf-hf4m

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*before 3.6.12; 4.0.0 to before 4.1.7; 4.2.0 to before 4.2.2VulnerableApache
cpe:2.3:a:redhat:build_of_apache_camel:*:*:*:*:*:spring_boot:*:*before 4.18.1VulnerableRed Hat
cpe:2.3:a:redhat:build_of_apache_camel:4.18.1:-:*:*:*:spring_boot:*:*4.18.1VulnerableRed Hat
cpe:2.3:a:redhat:fuse:7.0.0:*:*:*:*:*:*:*7.0.0VulnerableRed Hat
cpe:2.3:a:redhat:jboss_web_server:5.0:*:*:*:*:*:*:*5.0VulnerableRed Hat
  • cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:* Versions before 3.6.12; 4.0.0 to before 4.1.7; 4.2.0 to before 4.2.2 Vulnerable ·Apache
  • cpe:2.3:a:redhat:build_of_apache_camel:*:*:*:*:*:spring_boot:*:* Versions before 4.18.1 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:build_of_apache_camel:4.18.1:-:*:*:*:spring_boot:*:* Versions 4.18.1 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:fuse:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Red Hat
  • cpe:2.3:a:redhat:jboss_web_server:5.0:*:*:*:*:*:*:* Versions 5.0 Vulnerable ·Red Hat

Remediation

  • Fix · CNA Apache CXF (Apache Software Foundation) Fixed in 4.2.2, 4.1.7, 3.6.12
  • Fix · GHSA-9mrv-8pvf-hf4m org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven) Fixed in 4.2.2 Advisory →
  • Fix · GHSA-9mrv-8pvf-hf4m org.apache.cxf:cxf-rt-rs-security-oauth2 (Maven) Fixed in 4.1.7 Advisory →

Red Hat 1 advisory

  • RHSA-2026:37390 Released 2026-07-09 · Red Hat rating Important
    Red Hat Build of Apache Camel 4.18.1.P1 for Spring Boot release.
    • Red Hat build of Apache Camel 4.18.1.P1 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, 4.1.7, 4.2.2

    11 records Highest priority Priority MEDIUM 3 MEDIUM, 8 LOW

    Other records, highest priority first

    • TI-2026-37318 Apache CXF: OAuth2: Inverted IP Binding Check Defeats Security ControlPriority MEDIUM 50
    • TI-2026-36773 Apache CXF: XML External Entity (XXE) Injection in W3CMultiSchemaFactory and EndpointReferenceUtilsPriority MEDIUM 43
    • TI-2026-37334 Apache CXF: No restriction on attachment headers per messagePriority LOW 39
    Show all 11 records →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Fuse 7AffectedNo fix yet: Fix deferred
Red Hat JBoss Web Server 5AffectedNo fix yet: Fix deferred
Red Hat build of Apache Camel 4.18.1.P1 for Spring Boot 3.5.16Fixed RHSA-2026:37390
Not affected: 1 product
  • Red Hat JBoss Enterprise Application Platform Expansion Pack

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-50627
  2. 2026-10-03 Alias added: GHSA-9mrv-8pvf-hf4m
  3. 2026-10-25 EPSS moved to the 90th–95th percentile

References

Advisory 7

Other 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