GHSA-9qj4-v6r6-3wmx
Apache ActiveMQ Broker, Apache ActiveMQ, Apache ActiveMQ All have a Denial of Service via Out of Memory vulnerability
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Maven | org.apache.activemq:activemq-broker | >= 5.19.7, < 5.19.8 | 5.19.8 |
| Maven | org.apache.activemq:activemq-broker | >= 6.2.6, < 6.2.7 | 6.2.7 |
| Maven | org.apache.activemq:apache-activemq | >= 5.19.7, < 5.19.8 | 5.19.8 |
| Maven | org.apache.activemq:apache-activemq | >= 6.2.6, < 6.2.7 | 6.2.7 |
| Maven | org.apache.activemq:activemq-all | >= 5.19.7, < 5.19.8 | 5.19.8 |
| Maven | org.apache.activemq:activemq-all | >= 6.2.6, < 6.2.7 | 6.2.7 |
Details
As written in the advisory (Markdown source, shown as plain text).
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.
This issue affects Apache ActiveMQ Broker: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7; Apache ActiveMQ All: from 5.19.7 before 5.19.8, from 6.2.6 before 6.2.7.
Users are recommended to upgrade to version 6.2.7, which fixes the issue.
References
External links from the advisory. They lead to third-party sites.
- https://nvd.nist.gov/vuln/detail/CVE-2026-50750
- https://github.com/apache/activemq/pull/2083
- https://github.com/apache/activemq/commit/685ab0b7a4618abd25be7d64c3355401581b69e5
- https://github.com/apache/activemq/commit/80562ea8d327b7f538de1ff7672f158fe2abc4c1
- https://github.com/apache/activemq/commit/f3a365e74e85dee6042f324156ace661e0d97f2d
- https://github.com/apache/activemq
- https://github.com/apache/activemq/releases/tag/activemq-5.19.8
- https://github.com/apache/activemq/releases/tag/activemq-6.2.7
- https://lists.apache.org/thread/nhkmbdym61yp6wwy0dny8w1p46sm87kr