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Severe, 6 weeks1496Projects326

1496 severe, 6 weeks · 326 projects

IBMCVE-2026-12666

IBM MQ: information disclosure

IBM

CVE-2026-12666 · Published Sep 15, 2026 · updated Sep 17, 2026

High8.1
No fix yet
IBM advisory

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 Classes for Java could allow an authenticated attacker to obtain sensitive information or cause a denial of service due to XML external entity injection in MQRFH2 header processing.

Affected versions

PackageAffectedFixed in
MQ
Product
>= 9.1.0.0, <= 9.1.0.37 LTSNo fix yet
>= 9.2.0.0, <= 9.2.0.43 LTSNo fix yet
>= 9.3.0.0, <= 9.3.0.41 LTSNo fix yet
>= 9.3.0.0, <= 9.3.5.1 CDNo fix yet
Details and references
CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Severity from
the vendor (its own CVE record or advisory)
Weakness
CWE-611

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