What is CVE-2026-50623?

CVE-2026-50623 is a medium-severity vulnerability in Apache Cxf, classified under Improper Authentication. CVSS score: 4.8/10. Published 2026-06-12.

How severe is CVE-2026-50623?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Auth bypass in Apache Cxf

CVE-2026-50623

An authentication bypass vulnerability exists in the OAuth2 TokenIntrospectionService in Apache CXF. Due to a missing 'throw' keyword in the security context check, the introspection endpoint (/services/oauth2/introspect) can be accessed b…

Vulnerability class: Broken Authentication

EPSS: 0.004 (29.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Apache Cxf
Apache Software Foundation Cxf — versions 4.2.0, 0

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-50623?: CVE-2026-50623 is a medium-severity vulnerability in Apache Cxf, classified under Improper Authentication. CVSS score: 4.8/10. Published 2026-06-12.
How severe is CVE-2026-50623?: Medium severity. CVSS v3 base score is 4.8 out of 10.