Open redirect in Apache CXF OIDC relying party component
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 3 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and Red Hat. Impact type from CWE-601.
Summary
Apache CXF is affected in versions before 3.6.13, from 4.0.0 before 4.1.9, and from 4.2.0 before 4.2.4. Its OIDC relying party component reuses attacker-controlled state parameters as redirect targets without checking that the decoded URI belongs to the relying party's origin (CWE-601). An unauthenticated remote attacker can send a victim a crafted link, and the victim is redirected to an external URL after successful authentication, with both directly encoded and double-encoded URLs able to trigger it.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
Description from the CNA
Apache CXF’s OIDC relying-party component could redirect users to an attacker-controlled URL after successful authentication. The issue occurs because attacker-controlled state parameters are preserved and later used as redirect targets without validating that the final decoded URI belongs to the RP’s origin. Both directly encoded and double-encoded external URLs can trigger the issue, depending on which validation path is used. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Apache | Apache CXF | 4.2.0 to before 4.2.4; 4.0.0 to before 4.1.9; before 3.6.13 | 4.2.4, 4.1.9, 3.6.13 | Patch available | CNA |
- Apache CXF VendorApache Affected 4.2.0 to before 4.2.4; 4.0.0 to before 4.1.9; before 3.6.13 Fixed in 4.2.4, 4.1.9, 3.6.13 Patch available CNA
Remediation
Upgrade Apache CXF to 4.2.4, 4.1.9 or 3.6.13, depending on the branch in use, which fix the issue. The sources list no fixed version for Red Hat Fuse 7 and Red Hat JBoss Web Server 5, where Red Hat plans no fix, or for Red Hat build of Apache Camel for Spring Boot 4, where none is available.
Written with Claude Haiku 5.5 from the sources below · 2026-10-30
- Fix · CNA Apache CXF (Apache Software Foundation) Fixed in 4.2.4, 4.1.9, 3.6.13
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Apache CXF 3.6.13, 4.1.9, 4.2.4
11 records Highest priority Priority MEDIUM 4 MEDIUM, 7 LOW
Other records, highest priority first
- TI-2026-69970 Apache CXF: The Netty HTTP client transport does not perform TLS hostname verification.Priority MEDIUM 47
- TI-2026-69966 Authentication bypass in Apache CXF via weak STS token cache keysPriority MEDIUM 47
- TI-2026-69961 Apache CXF OIDC max_age check accepts sessions of any agePriority MEDIUM 47
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Fuse 7 | Affected | No fix planned: Out of support scope |
| Red Hat JBoss Web Server 5 | Affected | No fix planned: Out of support scope |
| Red Hat build of Apache Camel for Spring Boot 4 | Affected | No fix yet: Fix deferred |
Timeline
- 2026-10-09 Threatist record created from CVE-2026-79650
- 2026-10-09 Alias added: GHSA-75qj-7h27-jm2v
- 2026-10-16 CVSS score added · CISA ADP
- 2026-10-16 CISA SSVC decision points changed
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 CVSS score added · Red Hat
References
More Apache Cxf vulnerabilities
- 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
Sources
- CVE-2026-79650 · CVE Program
- CVE-2026-79650 · NVD
- FIRST EPSS
- GHSA-75qj-7h27-jm2v · GitHub Advisory Database · CC BY 4.0
- CVE-2026-79650 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences