{"@context":"https://openvex.dev/ns/v0.2.0","@id":"https://database.harborguard.co/cve/CVE-2026-50631/vex.json","author":"HarborGuard Database","role":"Document Creator","timestamp":"2026-06-12T14:04:22.866Z","version":1,"tooling":"HarborGuard Database (https://database.harborguard.co)","statements":[{"vulnerability":{"name":"CVE-2026-50631","@id":"https://www.cve.org/CVERecord?id=CVE-2026-50631","description":"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, which fixes this issue."},"products":[{"@id":"cpe:2.3:a:apache_software_foundation:apache_cxf:*:*:*:*:*:*:*:*","identifiers":{"cpe23":"cpe:2.3:a:apache_software_foundation:apache_cxf:*:*:*:*:*:*:*:*"}}],"status":"affected","action_statement":"Update to a fixed version: 4.1.7, 4.2.2.","timestamp":"2026-06-12T14:04:22.866Z"}]}