CVE-2026-11540 IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Remote attackers can obtain sensitive file system information via the FileTransfer servlet in IBM WebSphere Application Server.
- 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-2026-11540?
CVE-2026-11540 is a medium-severity 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 could allow a remote attacker to obtain sensitive information about the file system through the FileTransfer servlet.
Weakness: CWE-863
Which versions are affected by CVE-2026-11540?
How do I fix CVE-2026-11540?
No fix has been published for CVE-2026-11540 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-11540 being exploited?
There is no known exploitation of CVE-2026-11540 in the wild and no public exploit code.
Sources
Also known as GHSA-gw9h-2p46-wm4x.