Description
Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ.
Apache ActiveMQ Classic exposes the Jolokia JMX-HTTP bridge at /api/jolokia/ on the web console. The default Jolokia access policy permits exec operations on all ActiveMQ MBeans (org.apache.activemq:*), including
BrokerService.addNetworkConnector(String).
An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter using the "masterslave:// " URL which can allow loading a Spring XML application context using ResourceXmlApplicationContext.
Because Spring's ResourceXmlApplicationContext instantiates all singleton beans before the BrokerService validates the configuration, arbitrary code execution occurs on the broker's JVM through bean factory methods such as Runtime.exec().
This issue affects Apache ActiveMQ Broker: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6.
Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache ActiveMQ Broker | < 5.19.7, 6.0.0 – < 6.2.6 | 5.19.7 |
| Apache Software Foundation | Apache ActiveMQ All | < 5.19.7, 6.0.0 – < 6.2.6 | 5.19.7 |
| Apache Software Foundation | Apache ActiveMQ | < 5.19.7, 6.0.0 – < 6.2.6 | 5.19.7 |
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 | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
GitHub 2 repositories
-
strivepan/ActiveMQ-cve-2026-42588-scanner-gui ★ 10 · Jun 4, 2026
-
gentleman567/POC ★ 0 · Jun 18, 2026
Store vulnerability POC files including CVE-2026-42588 Spring RCE xml payload
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.apache.activemq:activemq-all | < 5.19.7 | 5.19.7 | GHSA-hg6c-8mvr-jqc9 |
| Maven | org.apache.activemq:activemq-all | >= 6.0.0, < 6.2.6 | 6.2.6 | GHSA-hg6c-8mvr-jqc9 |
| Maven | org.apache.activemq:activemq-broker | < 5.19.7 | 5.19.7 | GHSA-hg6c-8mvr-jqc9 |
| Maven | org.apache.activemq:activemq-broker | >= 6.0.0, < 6.2.6 | 6.2.6 | GHSA-hg6c-8mvr-jqc9 |
| Maven | org.apache.activemq:apache-activemq | < 5.19.7 | 5.19.7 | GHSA-hg6c-8mvr-jqc9 |
| Maven | org.apache.activemq:apache-activemq | >= 6.0.0, < 6.2.6 | 6.2.6 | GHSA-hg6c-8mvr-jqc9 |
Advisories 3
- WID-SEC-2026-2460 Atlassian Bamboo, Bitbucket, Confluence, Fisheye, Crucible, Jira und Jira Service Management: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 1, 2026
- WID-SEC-2026-3043 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 17, 2026
- WID-SEC-2026-1741 Apache ActiveMQ: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 10, 2026
References
- https://lists.apache.org/thread/ns0zktfo16s9ql2mmtqtlb6p6xcs45xm vendor-advisory