What is CVE-2026-13287?

CVE-2026-13287 is a high-severity vulnerability in IBM Mq, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-09-14.

How severe is CVE-2026-13287?

High severity. CVSS v3 base score is 7.1 out of 10.

XXE in IBM Mq

CVE-2026-13287

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 is vulnerable to an XML external entity injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.

Vulnerability class: XXE (XML External Entity)

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.

Affected products

Ibm Mq — versions 10.0.0.0

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

psirt@us.ibm.com (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-13287?: CVE-2026-13287 is a high-severity vulnerability in IBM Mq, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-09-14.
How severe is CVE-2026-13287?: High severity. CVSS v3 base score is 7.1 out of 10.