🛡️ CVE-2026-33227
🟡 CVSS 5.0 — Medium ✅ No Known Exploit NVD
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2026-04-09
Updated 2026-06-15
Modified 2026-04-09
Fix URL N/A

Affected Packages

Software From version Fixed in
activemq — —
activemq-broker 6.0.0 6.2.2
activemq-web 6.0.0 6.2.2
org.apache.activemq:activemq-all 6.0.0 6.2.2
org.apache.activemq:activemq-broker 6.0.0 6.2.2
org.apache.activemq:activemq-client 6.0.0 6.2.2
org.apache.activemq:activemq-web 6.0.0 6.2.2

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