Quick answers
- Is CVE-2026-105466 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-105466 being exploited in the wild.
- How severe is CVE-2026-105466?
- Medium severity, with a CVSS score of 6.5, published 12 October 2026.
- Which products and versions are affected?
- IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5.
- Is there a fix for CVE-2026-105466?
- Yes: fixed in Db2 11.5.9 (Security Update #94236 or later), Db2 12.1.4 (Security Update #94722 or later), Db2 12.1.5 (Security Update #94858 or later). Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-105466 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-105466?
- Check whether you run IBM Db2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: Db2 11.5.9 (Security Update #94236 or later), Db2 12.1.4 (Security Update #94722 or later), Db2 12.1.5 (Security Update #94858 or later)
Technical details
This is a resource exhaustion vulnerability (CWE-770) triggered when inserting into tables with XML columns under specific conditions. The attack requires authenticated database access and no user interaction; an authenticated attacker can craft INSERT statements to exhaust resources and crash the database service. A fix is available in security updates.
Affected products
- IBM Db2 11.5.0 through 11.5.9, 12.1.0 through 12.1.5
Timeline
- 2026-10-08: disclosed
- 2026-10-12: advisory