CVE-2026-50634: Apache CXF: WS JSON request filter trusts metadata from an unvalidated first signature entry
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.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.2.2 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 4.1.7 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 3.6.12
Event History
Frequently Asked Questions
What is the severity of CVE-2026-50634?
CVE-2026-50634 has a medium severity rating of 6.5 based on the CVSS v3.1 scoring.
What software is affected by CVE-2026-50634?
CVE-2026-50634 affects Apache CXF.
How do I fix CVE-2026-50634?
Fixing CVE-2026-50634 involves updating to a patched version of Apache CXF that addresses the vulnerability.
What impact does CVE-2026-50634 have on applications?
CVE-2026-50634 can allow an attacker to bypass the application's trust in metadata, which may lead to unauthorized actions.
How can I detect if my application is vulnerable to CVE-2026-50634?
You can detect vulnerability to CVE-2026-50634 by reviewing your system for the use of unverified metadata in JSON requests processed by Apache CXF.