CVE-2026-13271 is a vulnerability in IBM Mq
Published on November 4, 2026
IBM MQ Managed File Transfer is affected by a denial of service vulnerability
IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD Managed File Transfer could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to improper restriction of XML external entity references in command queue processing.
Vulnerability Analysis
CVE-2026-13271 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
What is a XXE Vulnerability?
The software processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.
CVE-2026-13271 has been classified to as a XXE vulnerability or weakness.
Products Associated with CVE-2026-13271
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Affected Versions
IBM MQ:- Version 9.2.0.0, <= 9.2.0.44 is affected.
- Version 9.3.0.0, <= 9.3.0.42 is affected.
- Version 9.4.0.0, <= 9.4.0.26 is affected.
- Version 9.4.0.0, <= 9.4.5.1 is affected.
- Version 10.0.0.0, <= 10.0.0.5 is affected.