CVE-2026-13275 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 Managed File Transfer contain an XML external entity injection caused by improper reply message processing, letting authenticated attackers read arbitrary files or perform server-side request forgery, exploit requires authentication.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.25% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
XML External Entity Injection
Impact
File System Read, Server Side Request Forgery
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
Published
14 September 2026
Updated
15 October 2026
Weakness
CWE-611

Vendor fix

Update to the latest available version beyond 10.0.0.0 Managed File Transfer.

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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