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CVE-2026-50631

7.4 high SSVC exploitation: none Modified

A race condition in AbstractOAuthDataProvider allows concurrent requests using the same Refresh Token to bypass single-use semantics and generate multiple valid Access Tokens, when 'recycleRefreshTokens' is set to false. A leaked refresh token can be replayed concurrently by multiple attackers or threads. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 7.4 · apacheNVD modified 2026-10-26 11:10

Affected (CPE criteria) 1

  • cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*

References 2