CVE-2026-11539 IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Attackers can bypass authentication in the SOAP/JMX connector of IBM WebSphere Application Server, potentially gaining unauthorized access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11539?
CVE-2026-11539 is a medium-severity authentication bypass vulnerability in IBM WebSphere Application Server, published on 18 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM WebSphere Application Server 9.0 and 8.5 is affected by an authentication bypass vulnerability in the SOAP/JMX connector.
Weakness: CWE-306
Which versions are affected by CVE-2026-11539?
How do I fix CVE-2026-11539?
No fix has been published for CVE-2026-11539 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-11539 being exploited?
There is no known exploitation of CVE-2026-11539 in the wild and no public exploit code.
Sources
Also known as GHSA-r353-h774-697m.