Is CVE-2026-11378 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-11378?

CVE-2026-11378 has a CVSS v3 severity of HIGH (8.8).

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CVE-2026-11378

Description

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to an integer overflow in distribution list processing.