What is CVE-2026-10853?

CVE-2026-10853 is a high-severity vulnerability in IBM Mq, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 7.5/10. Published 2026-09-18.

How severe is CVE-2026-10853?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in IBM Mq

CVE-2026-10853

IBM MQ could allow an authenticated attacker with cluster access to cause a denial of service or potentially execute arbitrary code due to improper validation of cluster command message lengths.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Mq — versions 10.0.0.0

Weakness classification (CWE)

CWE-470 — Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection)

References

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

Frequently asked questions

What is CVE-2026-10853?: CVE-2026-10853 is a high-severity vulnerability in IBM Mq, classified under Use of Externally-Controlled Input to Select Classes or Code (Unsafe Reflection). CVSS score: 7.5/10. Published 2026-09-18.
How severe is CVE-2026-10853?: High severity. CVSS v3 base score is 7.5 out of 10.