Description
Improper Input Validation vulnerability in Apache ActiveMQ, Apache ActiveMQ All, Apache ActiveMQ Stomp.
A remote unauthenticated peer that can reach an exposed STOMP connector can trigger denial-of-service behavior by sending a negative content-length. For the NIO STOMP transport, an attacker can keep streaming body bytes and grow the per-connection command buffer beyond configured limits to cause OOM. For the blocking STOMP protocol, an error will instead force abnormal transport exception handling for the affected connection and closure.
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 Stomp: 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 Stomp | < 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 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.activemq:activemq-all | < 5.19.8 | 5.19.8 | GHSA-xjwq-9jw5-jf7w |
| Maven | org.apache.activemq:activemq-all | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-xjwq-9jw5-jf7w |
| Maven | org.apache.activemq:activemq-stomp | < 5.19.8 | 5.19.8 | GHSA-xjwq-9jw5-jf7w |
| Maven | org.apache.activemq:activemq-stomp | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-xjwq-9jw5-jf7w |
| Maven | org.apache.activemq:apache-activemq | < 5.19.8 | 5.19.8 | GHSA-xjwq-9jw5-jf7w |
| Maven | org.apache.activemq:apache-activemq | >= 6.0.0, < 6.2.7 | 6.2.7 | GHSA-xjwq-9jw5-jf7w |
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/fsjb26605syqr8xks249h8gkp86t55d2 vendor-advisory