High [CVE-2026-50750] Denial of Service via repeated BrokerInfo commands
This high-severity Red Hat Linux advisory covers CVE-2026-50750.
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Summary
Denial of Service via Out of Memory vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All. Following the fix for CVE-2026-49270 an unauthenticated attacker can now cause broker OOM by sending an repeated BrokerInfo commands without sending a ConnectionInfo, until the broker will crash with OOM.
Users are recommended to upgrade to version 6.2.7, which fixes the issue. This can lead to an Out of Memory condition, causing the broker to crash and resulting in a Denial of Service.
Red Hat products that include Apache ActiveMQ classic components ship versions prior to 5.19.7 (5.x line) and prior to 6.2.6 (6.x line). The vulnerable code was introduced as a regression in versions 5.19.7 and 6.2.6 while fixing CVE-2026-49270, and is not present in the versions shipped by Red Hat.
Products shipping Apache ActiveMQ Artemis are not affected as Artemis is a separate codebase. Red Hat severity: Important — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
Weakness: CWE-770. Red Hat lists Red Hat AMQ Broker 7; Red Hat AMQ Clients; Red Hat build of Apache Camel for Spring Boot 4; Red Hat Data Grid 8; Red Hat Enterprise Linux 8; Red Hat Fuse 7; Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Enterprise Application Platform 8; Red Hat Satellite 6; Red Hat Single Sign-On 7 as not affected.
- < 5.19.7
- < 5.19.8
- < 6.2.6
- < 6.2.7
Official advisory · high-confidence parse· fetched 18 days ago·verify at source
Mitigation checklist
- Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official advisory · high-confidence parse· fetched 18 days ago·verify at source
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