CVE-2026-105466
Received Received - Intake

Denial of Service in IBM Db2 with XML Column Insertion

Publication date: 2026-10-12

Last updated on: 2026-10-12

Assigner: IBM Corporation

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.

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Meta Information

Published
2026-10-12
Last Modified
2026-10-12
Generated
2026-10-13
AI Q&A
2026-10-12
EPSS Evaluated
N/A
NVD
CVE-2026-105466
EUVD
EUVD-2026-97767

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
IBM Db2 11.5.0
IBM Db2 12.1.0

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

IBM Db2 versions 11.5.0 through 11.5.9 and 12.1.0 through 12.1.5 are vulnerable to a denial of service (DoS) when inserting data into tables with XML columns under specific conditions. The issue stems from improper resource allocation without throttling, leading to system resource exhaustion.

Detection Guidance

To detect this vulnerability, check the installed Db2 version against affected releases (11.5.0-11.5.9 or 12.1.0-12.1.5). Use Db2 commands like 'db2level' to verify the version. Monitor for unusual resource consumption during XML column insert operations.

Impact Analysis

This vulnerability can cause system slowdowns or crashes due to excessive resource consumption during XML column insert operations. It may disrupt database services, leading to downtime and potential data unavailability for users and applications relying on the affected Db2 instances.

Compliance Impact

This vulnerability could impact compliance with GDPR and HIPAA by enabling a denial of service (DoS) attack that disrupts database availability. For GDPR, availability is a key principle under Article 5, and a DoS could violate this. For HIPAA, availability of protected health information is critical, and disruptions could lead to compliance failures.

Mitigation Strategies

Apply the security updates provided by IBM for Db2 versions 11.5.9, 12.1.4, and 12.1.5 from IBM Fix Central to address the vulnerability.

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