Vulnerability · Published May 27, 2026 · Assigned by ibm
CVE-2026-5516IBM WebSphere Application Server Liberty is affected by a security bypass vulnerability
Medium 4.4
In plain English
A medium-severity race condition in WebSphere Application Server - Liberty from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).
Severity (CVSS 3.1)4.4Medium
Exploit odds (30 days)0.2%top 88.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server - Liberty | 22.0.0.11 – through 26.0.0.5 |
Weakness: CWE-362 · Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
References
- https://www.ibm.com/support/pages/node/7273425 vendor-advisory, patch