high8.1
CVE-2026-12666
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.…
Impact
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 products
| Product | Affected versions |
|---|---|
| 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 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 |
Versions were read from the advisory text. No structured product data has been published for this record yet.