Token Introspection Flaw in Apache CXF Affects Security Validation
CVE-2026-68481

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Cxf
Vendor
CVE Published:
6 August 2026

What is CVE-2026-68481?

A security vulnerability exists in Apache CXF's DefaultEncryptingOAuthDataProvider, where revoked tokens can still be decrypted successfully. This leads to a situation where the TokenIntrospectionService incorrectly reports revoked tokens as active, contravening established RFC standards that dictate that revoked tokens must be rendered inactive. To mitigate this flaw, users should upgrade to Apache CXF versions 4.2.3, 4.1.8, or 3.6.12 that contain fixes addressing this oversight.

Affected Version(s)

Apache CXF 4.2.0 < 4.2.3

Apache CXF 4.0.0 < 4.1.8

Apache CXF 0 < 3.6.12

References

https://lists.apache.org/thread/88c0h10yjb2b8201o1km3st71...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Guanping Zhang reported this vulnerability
.