PT-2026-48845 · Apache · Apache Cxf

Published 2026-06-12 · Updated 2026-06-12 · CVE-2026-50623

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

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 by any unauthenticated network attacker. However note that this is a safeguard only in the case that someone forgot to enable authentication on the service. Users are recommended to upgrade to version 4.2.2 or 4.1.7, which fixes this issue.

Fix

Improper Authentication

Weakness Enumeration

CWE-287

Related Identifiers

CVE-2026-50623

Affected Products

Apache Cxf

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-50623 · Security Note
• https://lists.apache.org/thread/ydzj8m5mqmjy13xgyj9mkk9hfff63qq7 · Vendor Advisory
• http://openwall.com/lists/oss-security/2026/06/11/3 · Note