CVE-2026-50634: Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature entry

June 12, 2026 (updated August 20, 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, which fix this issue.

References

github.com/advisories/GHSA-33j8-j763-4fv5
lists.apache.org/thread/9nfwh9d3m4kznxrk1mz98hl0jml18k0p
nvd.nist.gov/vuln/detail/CVE-2026-50634

Code Behaviors & Features

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