| Package | Affected versions | Patched versions |
|---|---|---|
| org.apache.cxf:cxf-rt-rs-security-oauth2 | ≥ 4.2.0, < 4.2.2< 4.1.7 | 4.2.24.1.7 |
| cxf | ≥ 4.2.0, < 4.2.2< 4.1.7 | 4.2.24.1.7 |
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.
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