Time-of-check Time-of-use (TOCTOU) Race Condition in Apache CXF - CVE-2026-57818
Published: August 24, 2026
Vulnerability identifier: #VU144828
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-57818
CWE-ID: CWE-367
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain multiple valid access tokens from a single authorization code.
The vulnerability exists due to a race condition in JCacheCodeDataProvider when processing concurrent authorization code redemption requests. A remote attacker can send concurrent requests to obtain multiple valid access tokens from a single authorization code.
Affected software
Apache CXF
How to mitigate CVE-2026-57818
Install security update from vendor's website.
Apache CXF - addressed in versions 3.6.12, 4.1.8, 4.2.3