CVE-2026-50631

HIGH CVSS 7.4 View on NVD ↗

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.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected Products

apache/cxf

References

https://lists.apache.org/thread/s83t3x4r626o9h8rt0ryr1w7w53l1vv8
http://www.openwall.com/lists/oss-security/2026/06/11/8

Published: Jun 12, 2026 10:16 UTC Modified: Jun 12, 2026 19:03 UTC