Hi Casey,

Thanks for pointing that out. It was a typo and the right version to
use is 5.19.4 (not 5.19.5) or 6.2.3. It should say "Users are
recommended to upgrade to version 5.19.4 or 6.2.3, which fixes the
issue."

I updated the website [1] and I requested security send an update to
Mitre so the cve.org link should update when that happens.

Chris

[1] 
https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txt

On Tue, Apr 7, 2026 at 3:01 PM Casey A. Owen <[email protected]> wrote:
>
> Christopher, the description below specifies the vulnerability as "before 
> 5.19.4" but recommends upgrade to 5.19.5.
>
> The website (https://activemq.apache.org/components/classic/download/) has 
> 5.19.4 available for download (03/31/2026) but lists 5.19.3 (03/24/2026) as 
> latest/last.
>
> Can you update the website to reflect 5.19.4 as latest/last and clarify 
> whether/when 5.19.5 will be released or if its mention is just a typo?
>
> Thanks,
>
>
> Casey Owen | Sr Applications Analyst
> Southwest Power Pool
>
> -----Original Message-----
> From: Christopher L. Shannon <[email protected]>
> Sent: Monday, April 6, 2026 8:08 AM
> To: [email protected]; [email protected]
> Subject: **External Email** CVE-2026-34197: Apache ActiveMQ Broker, Apache 
> ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans
>
> STOP! This is NOT an SPP email.
> Be very cautious of any links or attachments unless you recognize this sender 
> and are expecting this email.
> Please click the "Report Phish" button if you are unsure about this email.
>
> Severity: important
>
> Affected versions:
>
> - Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) before 5.19.4
> - Apache ActiveMQ Broker (org.apache.activemq:activemq-broker) 6.0.0 before 
> 6.2.3
> - Apache ActiveMQ (org.apache.activemq:activemq-all) before 5.19.4
> - Apache ActiveMQ (org.apache.activemq:activemq-all) 6.0.0 before 6.2.3
>
> 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: .
>
> Users are recommended to upgrade to version 5.19.5 or 6.2.3, which fixes the 
> issue.
>
> Credit:
>
> Naveen Sunkavally (Horizon3.ai) (finder)
>
> References:
>
> https://activemq.apache.org/
> https://www.cve.org/CVERecord?id=CVE-2026-34197
>
>
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