CVE-2026-8633 Code injection in Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty
Remote attackers can execute arbitrary code on IBM WebSphere Application Server via specially crafted requests to the Web Server Plug-ins.
- 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-2026-8633?
CVE-2026-8633 is a critical code injection vulnerability in Ibm Websphere Application Server, published on 26 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM Web Server Plug-ins for WebSphere Application Server and WebSphere Liberty 8.5, 9.0 IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to remote code execution in the Web Server Plug-ins, through a specially crafted request.
Weakness: CWE-94
Which versions are affected by CVE-2026-8633?
It affects 1 product.
Products include Ibm Websphere Application Server.
How do I fix CVE-2026-8633?
No fix has been published for CVE-2026-8633 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-8633 being exploited?
There is no known exploitation of CVE-2026-8633 in the wild and no public exploit code.
Other vulnerabilities in Ibm Websphere Application Server
Sources
Also known as GHSA-536c-j2qm-3hw6.