CVE-2026-9338 IBM WebSphere Application Server prior to 9.0.5.29 and 8.5.5.31 are affected by multiple vulnerabilities
Remote attackers can cause denial of service in IBM WebSphere Application Server by sending specially crafted requests that trigger excessive resource consumption.
- 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-2026-9338?
CVE-2026-9338 is a medium-severity denial of service vulnerability in Ibm Websphere Application Server, published on 10 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 vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to trigger excessive resource consumption, potentially leading to reduced availability of the affected service.
Weakness: CWE-400
Which versions are affected by CVE-2026-9338?
It affects 1 product.
Products include Ibm Websphere Application Server.
How do I fix CVE-2026-9338?
No fix has been published for CVE-2026-9338 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-9338 being exploited?
There is no known exploitation of CVE-2026-9338 in the wild and no public exploit code.
Other vulnerabilities in Ibm Websphere Application Server
Sources
Also known as GHSA-p349-w9qj-fpxx.