CVE-2026-13271
High
Description
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Ibm Mq
PublishedNov 4, 2026
First seenNov 4, 2026
Weakness typeCWE-611XML external entity (XXE)
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm mq | 9.2.0.0 ≤ v ≤ 9.2.0.44, 9.3.0.0 ≤ v ≤ 9.3.0.42, 9.4.0.0 ≤ v ≤ 9.4.0.26, 9.4.0.0 ≤ v ≤ 9.4.5.1, 10.0.0.0 ≤ v ≤ 10.0.0.5 | — |
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