CVE-2026-40466 Details.
Apache ActiveMQ - Remote Code Execution via HTTP Discovery Transport Bypass
Atlas does not check this one. Needs an outside server.
To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one.
About CVE-2026-40466. What It Means.
Apache ActiveMQ before 5.19.6 and 6.0.0 through 6.2.4 is vulnerable to remote code execution via a bypass of the CVE-2026-34197 security fix. The original fix blocked the "vm://" transport scheme in BrokerView.addNetworkConnector() and BrokerView.addConnector() to prevent authenticated attackers from loading malicious Spring XML configurations via the Jolokia API. However, the fix only denied the "vm" scheme. An attacker can bypass this restriction by using the HTTP Discover…
Affected Product. What Is Hit.
- Vendor
- apache
- Product
- Apache ActiveMQ
FAQ
Common Questions.
Apache ActiveMQ - Remote Code Execution via HTTP Discovery Transport Bypass. Apache ActiveMQ before 5.19.6 and 6.0.0 through 6.2.4 is vulnerable to remote code execution via a bypass of the CVE-2026-34197 security fix. The original fix blocked the "vm://" transport scheme in BrokerView.addNetworkConnector() and BrokerView.addConnector() to prevent authenticated attackers from loading malicious Spring XML configurations via the Jolokia API. However, the fix only denied the "vm" scheme. An attacker can bypass this restriction by using the HTTP Discover…
No. To test for this one, the site would have to contact a server outside your network and report back. Atlas does not run checks that need that, so it does not run this one. The facts about CVE-2026-40466 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-40466 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Apache ActiveMQ to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-40466. Atlas does not run a check for it, so nothing here says whether a particular site is affected.