CVE-2026-34197

Apache ActiveMQ Broker, Apache ActiveMQ All, Apache ActiveMQ: Authenticated users could perform RCE via Jolokia MBeans

Exploited in the wild. In CISA KEV since 2026‑04‑16. Fixed versions are out.

CVSS 3.18.8High EPSS percentile97th15% chance in 30 days CISA KEVListedsince 2026-04-16, due 2026-04-30
No public exploit known Fix3 products2 fixed builds listed below

Published 2026-04-07Updated 2026-08-04Sources: CVE.org, NVD, BDU, CSAF

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

Apache Software Foundation Apache ActiveMQ BrokerAffected: < 5.19.4Upgrade to: 5.19.4Affected: ≥ 6.0.0, < 6.2.3Upgrade to: 6.2.3Stated by: CVE record
Apache Software Foundation Apache ActiveMQ AllAffected: < 5.19.4Upgrade to: 5.19.4Affected: ≥ 6.0.0, < 6.2.3Upgrade to: 6.2.3Stated by: CVE record
Apache Software Foundation Apache ActiveMQAffected: < 5.19.4Upgrade to: 5.19.4Affected: ≥ 6.0.0, < 6.2.3Upgrade to: 6.2.3Stated by: CVE record

Versions as the sources state them. Full version matrix after sign-in

Check it yourselfA free Nuclei and OpenVAS check exists for this CVE. Run it against your hosts.Is your organisation exposed?Discuss checks for your systems with a specialist. Scope is agreed before testing.

Coverage timeline

0 publishers

Added to CISA KEV catalog
Apr 16, 2026·CISA KEV

Sourced from public security reporting — each date is when it was published, not when it happened. 5 further articles named this CVE in wider roundups without reporting it as a distinct event.

What it is

From the CVE record

Hitachi Energy is aware of RCE (Remote Code Execution) vulnerability in Apache ActiveMQ component of SOI product versions listed in this document. These vulnerabilities can be exploited to carry out various attacks affecting confidentiality, integrity, and availability of the product. Please refer to the Recommended Immediate Actions for information about the mitigation/remediation.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS97th

CISA KEV

Listed as exploited in the wild since 2026-04-16.

US federal agencies must remediate by 2026-04-30.

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

15% chance of exploitation activity in the next 30 days, which ranks it in the 97th percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

21 events over 176 days, from the signal feeds we watch.

2026-09-30EPSS band changecritical → moderate
2026-09-24EPSS band changecritical → moderateepss band change
2026-08-04Patch availablerecord updated
2026-07-15Patch availablerecord updated
2026-06-30Patch availablerecord updated
2026-06-29EPSS band changehigh → critical

Affected products

Apache Software Foundationoss-project · USaka apache foundation
- Apache ActiveMQ BrokerWeb AppDatabases / cache-message-queue
- Apache ActiveMQ AllLibraryLibraryOSS Libraries / generic-library
- Apache ActiveMQDatabases / cache-message-queue
- ActiveMQDatabaseOn-premDatabases / cache-message-queue
apacheoss-project · USaka apache http server, apache httpd
- activemqLibraryLibraryOSS Libraries / generic-library
- activemq brokerWeb AppDatabases / cache-message-queue

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Scored 8.8 by NVD.

How it is reached

Attack Vector NetworkExploitable remotely over the network without any special conditions
Attack Complexity LowNo special conditions — the attack can be reliably reproduced
Privileges Required LowRequires basic user-level privileges
User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

Confidentiality HighTotal information disclosure — all data in the component is compromised
Integrity HighTotal loss of integrity — attacker can modify any data in the component
Availability HighTotal denial of service — the component is completely unavailable