Timing-Window Security Bypass in IBM WSAS Liberty 22.0.0.11-26.0.0.5
CVE-2026-5516 Published on May 27, 2026
IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability
IBM WebSphere Application Server - Liberty 22.0.0.11 through 26.0.0.5 IBM WebSphere Application Server Liberty could allow a remote attacker to bypass security under limited conditions by exploiting a specific timing window.
Vulnerability Analysis
CVE-2026-5516 is exploitable with network access, and requires user privileges. This vulnerability is consided to have a high level of attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
What is a Race Condition Vulnerability?
The program contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently.
CVE-2026-5516 has been classified to as a Race Condition vulnerability or weakness.
Products Associated with CVE-2026-5516
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Affected Versions
IBM WebSphere Application Server - Liberty:- Version 22.0.0.11, <= 26.0.0.5 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.