7.5
High
CVE-2026-13772 IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 's Object Query Language engine resolves attacker-supplied class…
Description
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 's Object Query Language engine resolves attacker-supplied class names via Class.forName() and invokes their constructors with no allow-list at three distinct sinks (SELECT NEW, enum literals, and reflection-based comparators); an authenticated remote attacker who can influence an application-built OQL query string can execute arbitrary constructors on the WAS JVM, and a SELECT DISTINCT variant using planted grid values fires the same gadget post-readObject in a manner that survives JEP-290 serialization filters across grid node boundaries
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| WebSphere eXtreme Scale 8.6 | 8.6.1.0 → 8.6.1.6 | No fix stated |
Other CVEs of WebSphere eXtreme Scale
The 9 CVEs of WebSphere eXtreme Scale →
CVE-2026-13759
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 ships three ObjectInputStream subclasses (WsObjectInputStream,…
7.5
High
CVE-2026-13773
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 Approximately 50 generated CORBA stub classes in WebSphere eXtreme…
6.0
Medium
CVE-2026-9002
IBM WebSphere Extreme Scale 8.6.1.0 through 8.6.1.6 could allow an adjacent attacker to cause a denial of service due to…
6.5
Medium
CVE-2020-4336
IBM WebSphere eXtreme Scale 8.6.1 stores sensitive information in URL parameters
3.7
Low