CVE-2026-11906 Denial of service in Db2
An authenticated user can cause a denial of service in IBM Db2 by exploiting improper neutralization of special elements in XMLTable-derived columns.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-11906?
CVE-2026-11906 is a medium-severity denial of service vulnerability in Ibm Db2, published on 30 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could allow an authenticated user to cause a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns.
Weakness: CWE-1284
Which versions are affected by CVE-2026-11906?
It affects 1 product.
Products include Ibm Db2.
How do I fix CVE-2026-11906?
No fix has been published for CVE-2026-11906 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-2026-11906 being exploited?
There is no known exploitation of CVE-2026-11906 in the wild and no public exploit code.
Other vulnerabilities in Ibm Db2
Sources
Also known as GHSA-v7fg-h2r7-7537.