EUVD-2026-53857
GHSA-5c8v-93q6-cjxj
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Network-exploitable with low complexity; PR:L because attacker must have previously obtained a legitimate token; no availability impact; limited C and I since scope is bounded to the attacker's own prior authorization.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
3DescriptionCVE.org
In Apache CXF's DefaultEncryptingOAuthDataProvider, revoked access tokens still decrypt successfully, and TokenIntrospectionService reports active:true. The same applies to refresh tokens. This violates the RFC stipulations that 'The authorization server MUST invalidate the token.' and 'introspection of a revoked token MUST return {"active":false}'. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
AnalysisAI
Token revocation bypass in Apache CXF's DefaultEncryptingOAuthDataProvider allows revoked OAuth access and refresh tokens to remain functionally valid indefinitely - the provider continues to decrypt them successfully and TokenIntrospectionService returns active:true in direct violation of RFC 7009 and RFC 7662 mandates. All Apache CXF deployments using this built-in OAuth data provider and relying on token revocation as a security control are affected across the 3.6.x, 4.1.x, and 4.2.x branches. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the targeted Apache CXF deployment uses the built-in DefaultEncryptingOAuthDataProvider for OAuth 2.0 token management - deployments using a custom OAuthDataProvider implementation are not affected. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector was provided by NVD or the vendor at time of analysis, so all severity metrics are inferred from the description and CWE. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patches are available: upgrade Apache CXF to version 4.2.3, 4.1.8, or 3.6.12 depending on the branch in use, per the advisory at https://lists.apache.org/thread/88c0h10yjb2b8201o1km3st71fs2zw2b. … Detailed patch versions, workarounds, and compensating controls in full report. |
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