Insufficient verification of data authenticity in Apache CXF - CVE-2026-50634
Published: August 25, 2026
Vulnerability identifier: #VU145231
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-50634
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to influence downstream request parsing and signed-header consistency checks.
The vulnerability exists due to improper authentication in JwsJsonContainerRequestFilter when processing WS JSON requests with multiple signature entries. A remote user can supply a request in which metadata is taken from an unvalidated first signature entry to influence downstream request parsing and signed-header consistency checks.
The issue affects assumptions that accepted Content-Type or protected HTTP-header metadata came from the accepted signature entry.
Affected software
Apache CXF
How to mitigate CVE-2026-50634
Install security update from vendor's website.
Apache CXF - addressed in versions 4.1.7, 4.2.2