CVE-2026-41043: Apache ActiveMQ Vulnerable to Cross-site Scripting

CVE-2026-41043 · Severity: medium · CVSS 6.5 · Published 2026-04-24

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.

An authenticated attacker can show malicious content when browsing queues in the web console by overriding the content type to be HTML (instead of XML) and by injecting HTML into a JMS selector field.

This issue affects Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ Web: before 5.19.6, from 6.0.0 before 6.2.5.

Users are recommended to upgrade to version 6.2.5 or 5.19.6, which fixes the issue.

Technologies: Apache ActiveMQ, org.apache.activemq:activemq-all (Maven), org.apache.activemq:activemq-broker (Maven), org.apache.activemq:apache-activemq (Maven). Vendors: Apache, Maven.

Quick answers

Is CVE-2026-41043 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-41043 being exploited in the wild.
How severe is CVE-2026-41043?
Medium severity, with a CVSS score of 6.5, published 24 April 2026.
Which products and versions are affected?
org.apache.activemq:activemq-all (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6; org.apache.activemq:activemq-broker (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6; org.apache.activemq:apache-activemq (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6.
Is there a fix for CVE-2026-41043?
Yes. org.apache.activemq:activemq-all (Maven): upgrade to 5.19.6 or later; org.apache.activemq:activemq-broker (Maven): upgrade to 5.19.6 or later; org.apache.activemq:apache-activemq (Maven): upgrade to 5.19.6 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-41043?
Check whether you run Apache ActiveMQ, Apache Activemq Web, org.apache.activemq:activemq-all (Maven) or one of the others listed at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • org.apache.activemq:activemq-all (Maven): upgrade to 5.19.6 or later
    # set org.apache.activemq:activemq-all to 5.19.6 in your pom.xml or build.gradle
  • org.apache.activemq:activemq-broker (Maven): upgrade to 5.19.6 or later
    # set org.apache.activemq:activemq-broker to 5.19.6 in your pom.xml or build.gradle
  • org.apache.activemq:apache-activemq (Maven): upgrade to 5.19.6 or later
    # set org.apache.activemq:apache-activemq to 5.19.6 in your pom.xml or build.gradle

Affected products

  • Apache ActiveMQ
  • Apache Activemq Web
  • org.apache.activemq:activemq-all (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6
  • org.apache.activemq:activemq-broker (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6
  • org.apache.activemq:apache-activemq (Maven) ECOSYSTEM:introduced=0,fixed=5.19.6

Identifiers

  • CVE-2026-41043
  • GHSA-2jp3-2923-9h52

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