Advisory [CVE-2026-50634] Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature entry
This security Apache Software Foundation advisory covers CVE-2026-50634 affecting Apache CXF.
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Summary
A vulnerability in Apache CXF's JwsJsonContainerRequestFilter can be exploited to cause CXF to process metadata that was not authenticated by the accepted signature. This can bypass the application's assumption
that accepted `Content-Type` or protected HTTP-header metadata came from a verified signature entry, and may steer downstream JAX-RS entity parsing or signed-header consistency checks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.
- Apache CXF 4.2.0 before 4.2.2
- Apache CXF 4.0.0 before 4.1.7
- Apache CXF before 3.6.12
Official advisory · medium-confidence parse· fetched 3 months ago·verify at source
- 4.2.2
- 4.1.7
- 3.6.12
Official advisory · medium-confidence parse· fetched 3 months ago·verify at source
Mitigation checklist
- Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fix this issue.
Official advisory · medium-confidence parse· fetched 3 months ago·verify at source
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