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CVE-2026-50634 Apache Software Foundation CVE debrief

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.

Vendor
Apache Software Foundation
Product
Apache CXF
CVSS
MEDIUM 6.5
CISA KEV
Not listed in stored evidence
Original CVE published
2026-06-12
Original CVE updated
2026-08-07
Advisory published
2026-06-12
Advisory updated
2026-08-07

Who should care

Users of Apache CXF, particularly those using versions prior to 4.2.2 or 4.1.7, should be aware of this vulnerability and take steps to upgrade.

Technical summary

The vulnerability, CVE-2026-50634, has a CVSS score of 6.5 and is classified as MEDIUM severity. It affects Apache CXF and can be exploited to bypass authentication. The vulnerability is due to a flaw in the JwsJsonContainerRequestFilter, which can cause CXF to process unauthenticated metadata.

Defensive priority

MEDIUM

Recommended defensive actions

  • Upgrade to Apache CXF version 4.2.2 or 4.1.7, which fixes this issue.

Evidence notes

The CVE-2026-50634 vulnerability was published on 2026-06-12T10:16:23.413Z and modified on 2026-06-12T18:49:58.963Z. The vulnerability affects Apache CXF and has a CVSS score of 6.5.

Sources and references

Verified primary and authoritative sources

  • CVE-2026-50634 CVE Program record

    Publisher, destination, and source semantics verified

    URL: https://www.cve.org/CVERecord?id=CVE-2026-50634

    CVE Program - Official CVE Program record with source-provided CVE metadata.

  • CVE-2026-50634 NVD vulnerability detail

    Publisher, destination, and source semantics verified

    URL: https://nvd.nist.gov/vuln/detail/CVE-2026-50634

    NIST National Vulnerability Database - Official NIST NVD detail page and source-specific vulnerability assessment.

Supplemental references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.