What’s Vulnerable › Vulnerabilities
CVE-2026-12667: IBM MQ .NET client is vulnerable to XML external entity injection
- Severity: high (CVSS 7.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-15 · updated 2026-09-16
- Weakness: CWE-611
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.
Affected products
- IBM MQ: from 9.1.0.0 through 9.1.0.37 LTS; from 9.2.0.0 through 9.2.0.43 LTS; from 9.3.0.0 through 9.3.0.41 LTS; from 9.3.0.0 through 9.3.5.1 CD; from 9.4.0.0 through 9.4.0.25 LTS; from 9.4.0.0 through 9.4.5.1 CD
References
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