Vulnerability in Apache Cxf
CVE-2026-50634
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.004 (27.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 27th percentile — 27.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.001
Affected products
- Apache Cxf
- Apache Software Foundation Cxf — versions 4.0.0, 0, 4.2.0
Weakness classification (CWE)
References
- lists.apache.org/thread/9nfwh9d3m4kznxrk1mz98hl0jml18k0p (vendor-advisory, Mailing List, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2026-50634?
- CVE-2026-50634 is a medium-severity vulnerability in Apache Cxf, classified under Improper Verification of Cryptographic Signature. CVSS score: 6.5/10. Published 2026-06-12.
- How severe is CVE-2026-50634?
- Medium severity. CVSS v3 base score is 6.5 out of 10.