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Vulnerability record · CVE-2026-12667 · published 15 September 2026

CVE-2026-12667: XML external entity (XXE) vulnerability

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 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.

7.1 CVSS 3.1 High EPSS 0.27% · top 83.5% CWE-611 · XML external entity (XXE) Awaiting Analysis
7.1CVSS 3.1 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
1References
16 Sep 2026Last modified by NVD

Description

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 could allow an authenticated attacker to read files from a vulnerable .NET client or cause limited denial of service due to improper handling of XML external entities in RFH2 folder parsing.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L

References

LinkTags
https://www.ibm.com/support/pages/node/7284936

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Source: NIST National Vulnerability Database (record CVE-2026-12667), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.