Apache ActiveMQ Improper Input Validation Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA notes
https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txt ; https://nvd.nist.gov/vuln/detail/CVE-2026-34197
Description
Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, 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) and BrokerService.addConnector(String). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter to load a remote 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 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ All: before 5.19.4, from 6.0.0 before 6.2.3; Apache ActiveMQ: before 5.19.4, from 6.0.0 before 6.2.3. Users are recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the issue
Severity
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation Context
as of October 13, 2026- CISA added CVE-2026-34197 to the KEV catalog 9 days after its CVE record was published. The median for entries added in 2026 so far is 15 days.
- It is one of 41 Apache entries in the CISA KEV catalog, and one of 3 added in 2026.
- Its current EPSS score (15.5%) is higher than that of 31% of CISA KEV entries.
Affected Products
| Vendor | Product | Affected versions |
|---|---|---|
| Apache Software Foundation | Apache Software Foundation Apache ActiveMQ Broker | 0 to <5.19.4 6.0.0 to <6.2.3 |
| Apache Software Foundation | Apache Software Foundation Apache ActiveMQ All | 0 to <5.19.4 6.0.0 to <6.2.3 |
| Apache Software Foundation | Apache Software Foundation Apache ActiveMQ | 0 to <5.19.4 6.0.0 to <6.2.3 |
References
2 LinksRecord Details
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Related
Tool categories
CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.