CVE-2026-50623

Summary

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.

Affected Software

VendorProductVersion RangeStatus
Apache Software FoundationApache CXF4.2.0 < 4.2.2affected
Apache Software FoundationApache CXF0 < 4.1.7affected

Weaknesses

  • CWE-287: CWE-287 Improper Authentication

ADP Enrichment

CVE Program Container

Additional References

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: total

References