Medium · published June 12, 2026
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.
| Product | Versions | Fixed in |
|---|---|---|
| apache/cxf | < 4.1.7 | 4.1.7 |
| apache/cxf | ≥ 4.2.0, < 4.2.2 | 4.2.2 |