Description
Memory Allocation with Excessive Size Value vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Client, Apache ActiveMQ Broker.
An authenticated user can cause a broker DoS by sending a crafted OpenWire Message with a large encoded size value for the map. OpenWire message property maps are unmarshaled without size validation which can trigger OOM and crash the broker.
This issue affects Apache ActiveMQ: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ All: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Client: before 5.19.8, from 6.0.0 before 6.2.7; Apache ActiveMQ Broker: before 5.19.8, from 6.0.0 before 6.2.7.
Users are recommended to upgrade to version 6.2.7 or 5.19.8, which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache ActiveMQ | < 5.19.8, 6.0.0 – < 6.2.7 | 5.19.8 |
| Apache Software Foundation | Apache ActiveMQ All | < 5.19.8, 6.0.0 – < 6.2.7 | 5.19.8 |
| Apache Software Foundation | Apache ActiveMQ Client | < 5.19.8, 6.0.0 – < 6.2.7 | 5.19.8 |
| Apache Software Foundation | Apache ActiveMQ Broker | < 5.19.8, 6.0.0 – < 6.2.7 | 5.19.8 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | activemq | No fix yet | — |
| Debian 12 | activemq | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | activemq | No fix yet | — |
| Ubuntu 26.04 LTS | activemq | No fix yet | — |
| Ubuntu 25.10 | activemq | No fix yet | — |
| Ubuntu 24.04 LTS | activemq | No fix yet | — |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | activemq | No fix yet | — |
| Ubuntu Pro 20.04 LTS | activemq | No fix yet | — |
| Ubuntu Pro 18.04 LTS | activemq | No fix yet | — |
| Ubuntu Pro 16.04 LTS | activemq | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | zipkin | 3.6.1-r34 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.activemq:activemq-all | < 5.19.8 | 5.19.8 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:activemq-all | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:activemq-broker | < 5.19.8 | 5.19.8 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:activemq-broker | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:activemq-client | < 5.19.8 | 5.19.8 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:activemq-client | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:apache-activemq | < 5.19.8 | 5.19.8 | GHSA-f77w-px59-cqf5 |
| Maven | org.apache.activemq:apache-activemq | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-f77w-px59-cqf5 |
Advisories 2
- WID-SEC-2026-2124 Apache ActiveMQ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 21, 2026
- WID-SEC-2026-3043 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
References
- https://lists.apache.org/thread/grrd1mwgkgblqjbwkkq6dvmdxd9ov2dx vendor-advisory