CVE-2026-9171 Vulnerabilities in IBM WebSphere Application affects IBM PowerVM Novalink.
A remote attacker can cause a denial of service by sending a specially-crafted request that consumes memory resources 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-2026-9171?
CVE-2026-9171 is a high-severity denial of service vulnerability in IBM PowerVM Novalink, published on 17 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
IBM WebSphere Application Server and WebSphere Application Server Liberty are vulnerable to a denial of service, caused by sending a specially-crafted request. A remote attacker could exploit this vulnerability to cause the server to consume memory resources.
Weakness: CWE-400
Which versions are affected by CVE-2026-9171?
It affects 1 product.
Products include Ibm Powervm Novalink.
How do I fix CVE-2026-9171?
No fix has been published for CVE-2026-9171 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-2026-9171 being exploited?
There is no known exploitation of CVE-2026-9171 in the wild and no public exploit code.
Other vulnerabilities in IBM PowerVM Novalink
Sources
Also known as GHSA-x8q4-qwvw-778r.