Vulnerability · Published Jun 22, 2026 · Assigned by ibm
CVE-2026-9320IBM WebSphere Application Server and WebSphere Application Server Liberty are affected by multiple vulnerabilities
Medium 5.9
In plain English
A medium-severity uncontrolled resource consumption in WebSphere Application Server from IBM. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities).
Severity (CVSS 3.1)5.9Medium
Exploit odds (30 days)0.6%top 52.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
IBM WebSphere Application Server 9.0, and 8.5 and IBM WebSphere Application Server - Liberty 17.0.0.3 through 26.0.0.6 are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| IBM | WebSphere Application Server | 9.0.0 – through 7.0.2 Interim Fix 0358.5.0 – through 7.0.3 Interim Fix 017 |
| IBM | WebSphere Application Server - Liberty | 17.0.0.3 – through 26.0.0.6 |
Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
References
- https://www.ibm.com/support/pages/node/7276579 vendor-advisory, patch