CVE-2026-11906: db2 from 11.5.0 (inclusive), through 11.5.9 (inclusive), from 12.1.0 (inclusive), through 12.1.4 (inclusive); +1 more…

Affected technology

db2 · from 11.5.0 (inclusive), through 11.5.9 (inclusive)
ibm

db2 · from 12.1.0 (inclusive), through 12.1.4 (inclusive)
ibm

Db2 · 11.5.0 through 11.5.9, 12.1.0 through 12.1.4
IBM

Description’s affected range: through 11.5.9, and 12.1.0 through 12.1.4 for Linux, UNIX and Windows (includes Db2 Connect Server) could

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An authenticated user could cause a denial of service due to improper neutralization of special elements in the data query logic of XMLTable-derived columns. Vendor/CNA’s CVSS 3.1 assessment (base score 6.5/10) rates confidentiality and integrity impact as none; availability impact as high.