CVE-2026-12148
High
Description
IBM MQ Operator could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to unrestricted Java deserialization in the MQ Classes for Java.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Ibm Mq Operator
PublishedOct 19, 2026
First seenOct 19, 2026
Weakness typeCWE-502Deserialization of untrusted data
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| ibm mq_operator | 2.0.0 ≤ v ≤ 2.0.29, 3.2.0 ≤ v ≤ 3.2.29, 3.3.0, 3.4.0, 3.4.1, 3.5.0, 3.5.1, 3.5.2, 3.5.3, 3.6.0, 3.6.1, 3.6.2, 3.6.3, 3.6.4, 3.7.0, 3.7.1, 3.7.2, 3.8.0, 3.8.1, 3.9.0, 3.9.1, 3.9.2, 4.0.0, 4.0.1, 4.0.2, 4.0.3, 4.0.4 | — |
| ibm supplied_mq_advanced_container_images | 9.4.1.0, 9.4.1.1, 9.4.2.0, 9.4.2.1, 9.4.3.0, 9.4.3.1, 9.4.4.0, 9.4.4.1, 9.4.5.0, 9.4.5.1, 10.0.0.0, 10.0.0.5, 9.3.0.0, 9.3.0.1, 9.3.0.3, 9.3.0.4, 9.3.0.5, 9.3.0.6, 9.3.0.10, 9.3.0.11, 9.3.0.15, 9.3.0.16, 9.3.0.17, 9.3.0.20, 9.3.0.21, 9.3.0.25, 9.4.0.0, 9.4.0.5, 9.4.0.6, 9.4.0.7, 9.4.0.10, 9.4.0.11, 9.4.0.12, 9.4.0.15, 9.4.0.16, 9.4.0.17, 9.4.0.20, 9.4.0.21, 9.4.0.25, 9.4.0.26 | — |
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