Vulnerability report

Exploited in the wild Confirmed confidence In CISA KEV

CVE-2026-34197

Apache ActiveMQ Broker Remote Code Execution

Apache ActiveMQ Broker · All versions (default: unaffected)

Watch CVE-2026-34197 Browse KEV feed
Severity
CVSS 8.8 · High
Confidence
Confirmed
Exploit status
Exploited in the wild
EPSS
15.5%
First observed
—
Last observed
—

Decision summary

What security teams need to know first

Direct answers before the deeper technical record.

What it is

CVE-2026-34197 is a vulnerability affecting Apache ActiveMQ Broker and 2 other products. Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker,...

Is it exploited?

Yes. Previdian tracks this CVE as a known exploited vulnerability. Confidence is confirmed. Listed in CISA KEV. Also confirmed by third-party sources.

Who is affected?

Apache ActiveMQ Broker all versions (default: unaffected).

What should we do?

Prioritize remediation. Validate affected assets and apply vendor fixes on an accelerated timeline.

Overview

Apache ActiveMQ Broker Remote Code Execution

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

Red Hat Unaffected
Red Hat AMQ Broker 7 activemq-broker
All versions (default: unaffected)
Red Hat Unaffected
Red Hat Data Grid 8 activemq-broker
All versions (default: unaffected)
Red Hat Unaffected
Red Hat Enterprise Linux 8 log4j:2/log4j
All versions (default: unaffected)
Red Hat Unaffected
Red Hat Enterprise Linux 9 log4j
All versions (default: unaffected)
Red Hat Unaffected
Red Hat Fuse 7 activemq-all
All versions (default: unaffected)
Red Hat Unaffected
Red Hat Fuse 7 activemq-broker
All versions (default: unaffected)
Red Hat Unaffected
Red Hat JBoss Enterprise Application Platform 7 activemq-broker
All versions (default: unaffected)
Red Hat Unaffected
Red Hat JBoss Enterprise Application Platform 8 activemq-broker
All versions (default: unaffected)
Red Hat Affected
Red Hat JBoss Enterprise Application Platform Expansion Pack activemq-broker
All versions (default: affected)
Apache Software Foundation Affected
Apache ActiveMQ Broker org.apache.activemq:activemq-broker
Before 5.19.4 Before 6.2.3
Apache Software Foundation Affected
Apache ActiveMQ All org.apache.activemq:activemq-all
Before 5.19.4 Before 6.2.3
Apache Software Foundation Affected
Before 5.19.4 Before 6.2.3
View vendor advisory (opens in new tab)
Published
07 Apr 2026
Exploitation Reported
01 Jun 2026
Attack vector
Remote
Complexity
Low
Privileges
Low
User interaction
None

Tags

cisa nuclei_scanner apache

CVE References

Exploitation evidence

Why Previdian marks this CVE as exploited

Third-party attestation and first-party sensor observation are shown separately so teams can judge the evidence chain.

Exploited in the wild

CVE

Recorded 01 Jun 2026

A trusted third party reported exploitation.

Proof of concept available

GitHub

Recorded 06 Jun 2026

Public scanner or PoC coverage increases practical exploitability.

Known exploited vulnerability sources

Per-source evidence links for KEV attestations are available through the Previdian Pro API.

Learn about Pro API access
Source Added
The Shadowserver First 2026-06-01 00:00 UTC
CVE 2026-06-01 13:07 UTC
CISA 2026-06-02 14:01 UTC

Detection

Operational artifacts and observed signals

Make the evidence actionable in scanner, SOC, and edge-control workflows.

Observed signals

Request targets
User-Agents
Callback hosts
0
0
0

Request targets and User-Agents available in Pro. Callback host details available in Enterprise.

Virtual patch status

No Previdian virtual patch is currently available. Future rules ship for ModSecurity, Cloudflare, and AWS WAF.

Learn about virtual patches →

Scanner Artifacts

Scanner and exploit-framework references linked to this CVE.

Scanner Reference Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-34197.yaml 01 Jun 2026

Risk and context

Severity, weaknesses, and research context

CVSS v3.1

8.8 High

Potential damage if exploited. Separate from whether attackers are using it.

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

EPSS

15.5%

Estimated chance of exploitation in the next 30 days. Previdian's warning comes from evidence, not this score.

Weaknesses

Improper Input Validation CWE-20 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') CWE-78 Improper Control of Generation of Code ('Code Injection') CWE-94

Recent mention · Rapid7

Weekly Metasploit Update: Apache ActiveMQ RCE, Gogs Rebase RCE, and Windows Kernel Pointer Enum

When Open Source is a bit too OpenSeveral fun modules landed this week, including an Apache RCE, Windows Kernel pointer collection, and Gogs RCE via naming. Leading off is Gogs' RCE that allows an attacker to execute commands by naming their branch --exec  and requesting a...

Read full advisory

Potential Proof of Concepts

These PoCs are unverified and could contain malware. Use at your own risk.

nirvanasec/CVE-2026-34197-PoC

github · Created 2026-09-04 15:43:12 UTC · 0 stars · AI assessment 90%

Apache ActiveMQ - Remote Code Execution

nuclei · Created Unknown

Timeline

From disclosure to observed exploitation

  1. 14:21 UTC

    Public PoC available

    Public proof-of-concept code published

  2. 14:01 UTC

    Added to CISA KEV

    Listed in the CISA Known Exploited Vulnerabilities catalog

  3. 15:34 UTC

    Nuclei template available

    Scanner coverage available

  4. 13:07 UTC

    KEV confirmed by CVE

    Exploitation attested by an external source

  5. 00:00 UTC

    Added to Previdian KEV Feed

    High-confidence, third-party attested exploitation

  6. 07:50 UTC

    CVE published

    Vulnerability disclosed publicly

  7. 14:51 UTC

    CVE ID reserved

    Identifier reserved by the CNA

Pro API

Automate this intelligence

Confidence, exploit status, sensor telemetry, PoCs, scanner integrations, mentions, and tags are available programmatically for VM, SOC, and CTI workflows.

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  • Evidence confidence and provenance
  • First-party sensor telemetry
  • PoC and scanner references
  • Affected versions and enrichment
  • Automation-ready JSON delivery

GET /api/v2/pro/kevs/CVE-2026-34197

Free JSON includes basic KEV fields 
{
  "cve_id": "CVE-2026-34197",
  "confidence": "Confirmed",
  "cvss_score": 8.8,
  "cvss_estimated": false,
  "epss_score": 0.15492,
  "exploit_status": {
    "exploited_in_the_wild": true,
    "active_exploitation_observed": false
  },
  "sensor_telemetry": { "attempts": 0, "sensors": 0 }
}