CVE-2026-105466 IBM® Db2® is vulnerable to a denial of service when inserting into a table with XML columns under specific conditions
Attackers can cause a denial of service in IBM Db2 by inserting data into tables with XML columns under specific conditions.
- 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-2026-105466?
CVE-2026-105466 is a medium-severity denial of service vulnerability in IBM Db2, published on 12 Oct 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 12.1.5 is vulnerable to a denial of service when inserting into a table with XML columns under specific conditions.
Weakness: CWE-770
Which versions are affected by CVE-2026-105466?
How do I fix CVE-2026-105466?
No fix has been published for CVE-2026-105466 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-2026-105466 being exploited?
There is no known exploitation of CVE-2026-105466 in the wild and no public exploit code.
Sources
Also known as GHSA-9cww-6xhm-jjh6.