Apache ActiveMQ: Improper validation and restriction of a classpath path name
Improper validation and restriction of a classpath path name vulnerability in Apache ActiveMQ Client, Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ Web, Apache ActiveMQ.
In two instances (when creating a Stomp consumer and also browsing messages in the Web console) an authenticated user provided "key" value could be constructed to traverse the classpath due to path concatenation. As a result, the application is exposed to a classpath path resource loading vulnerability that could potentially be chained together with another attack to lead to exploit. This issue affects Apache ActiveMQ Client: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Broker: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ All: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ Web: before 5.19.3, from 6.0.0 before 6.2.2; Apache ActiveMQ: before 5.19.3, from 6.0.0 before 6.2.2.
Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue. Note: 5.19.3 and 6.2.2 also fix this issue, but that is limited to non-Windows environments due to a path separator resolution bug fixed in 5.19.4 and 6.2.3.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.apache.activemq:activemq-all | < 5.19.3, >= 6.0.0, < 6.2.2 | 5.19.3, 6.2.2 |
| Java / Kotlin (Maven) | org.apache.activemq:activemq-broker | < 5.19.3, >= 6.0.0, < 6.2.2 | 5.19.3, 6.2.2 |
| Java / Kotlin (Maven) | org.apache.activemq:activemq-client | < 5.19.3, >= 6.0.0, < 6.2.2 | 5.19.3, 6.2.2 |
| Java / Kotlin (Maven) | org.apache.activemq:activemq-web | < 5.19.3, >= 6.0.0, < 6.2.2 | 5.19.3, 6.2.2 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-22- Platform
- Java / Kotlin (Maven)
- Package
org.apache.activemq:activemq-all, org.apache.activemq:activemq-broker, org.apache.activemq:activemq-client- Disclosed
- 07.04.2026
- Updated
- 11.10.2026 13:20
Sources and licenses
OSV / GitHub Advisory Database - GHSA-h2h4-5m64-m273 - CC BY 4.0
Vulnerability history: org.apache.activemq:activemq-client
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 18
- First → latest
- 10.2018 04.2026
- Without a fix
- 0
- Exploited in attacks
- 2
Severity breakdown
- Critical 4
- High 4
- Medium 10
Disclosures per year
- 2018: 1
- 2019: 2
- 2020: 0
- 2021: 0
- 2022: 11
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 2
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Apache ActiveMQ: Improper validation and restriction of a classpath path name this entry
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