CVE-2026-13287 IBM MQ - XML External Entity Injection

IBM MQ 9.1.0.0 through 9.1.0.37 LTS, 9.2.0.0 through 9.2.0.43 LTS, 9.3.0.0 through 9.3.0.41 LTS, 9.3.0.0 through 9.3.5.1 CD, 9.4.0.0 through 9.4.0.25 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 contain an XML external entity injection caused by unsafe XML data processing, letting remote attackers expose sensitive information or consume memory resources, exploit requires crafted XML data.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.39% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
XML External Entity Injection
Impact
Information Disclosure, Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-611

Vendor fix

Update to the latest available version.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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