CVE-2026-11536 IBM WebSphere Application Server is affected by a remote code execution vulnerability
Remote attackers can execute arbitrary code on IBM WebSphere Application Server via the SOAP/JMX connector due to unsafe deserialization.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11536?
CVE-2026-11536 is a high-severity unsafe deserialization vulnerability in Ibm Websphere Application Server, published on 30 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM WebSphere Application Server 9.0, and 8.5 is affected by a remote code execution vulnerability in the SOAP/JMX connector.
Weakness: CWE-502
Which versions are affected by CVE-2026-11536?
It affects 1 product.
Products include Ibm Websphere Application Server.
How do I fix CVE-2026-11536?
No fix has been published for CVE-2026-11536 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-11536 being exploited?
There is no known exploitation of CVE-2026-11536 in the wild and no public exploit code.
Other vulnerabilities in Ibm Websphere Application Server
Sources
Also known as GHSA-6qjg-94q2-5wvp.