securitytabs

CVE-2026-34197

High8.8CISA KEV — exploited in the wild

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

CVSS
8.8v3.1
EPSS (exploit probability)
15.5%97th pct
CISA KEV
Listed

EPSS trendFIRST daily scores, last 90 days

FIRST EPSS fell from 98.3% on 2026-09-18 to 15.5% on 2026-10-20, ranging 15.5%–98.3% across 31 daily scores.
2026-09-18 → 2026-10-20 · 31 days · 15.5%–98.3%
Daily values
FIRST EPSS daily scores for this CVE
Score dateEPSSPercentile
2026-10-2015.5%96.8%
2026-10-1915.5%96.8%
2026-10-1815.5%96.8%
2026-10-1615.5%96.8%
2026-10-1515.5%96.8%
2026-10-1415.5%96.8%
2026-10-1315.5%96.7%
2026-10-1215.5%96.7%
2026-10-1115.5%96.7%
2026-10-1015.5%96.7%
2026-10-0915.5%96.7%
2026-10-0815.5%96.7%
2026-10-0715.5%96.7%
2026-10-0615.5%96.7%
2026-10-0515.5%96.7%
2026-10-0415.5%96.7%
2026-10-0315.5%96.7%
2026-10-0215.5%96.7%
2026-10-0115.5%96.7%
2026-09-3015.5%96.7%
2026-09-2915.5%96.7%
2026-09-2715.5%96.7%
2026-09-2615.5%96.7%
2026-09-2515.5%96.7%
2026-09-2415.5%96.7%
2026-09-2398.3%99.9%
2026-09-2298.3%99.9%
2026-09-2198.3%99.9%
2026-09-2098.3%99.9%
2026-09-1998.3%99.9%
2026-09-1898.3%99.9%

CISA KEV entrycatalogue 2026.10.20

Date added
2026-04-16
Federal due date
2026-04-30
Known ransomware use
Unknown

Required action

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

Verbatim from the CISA KEV catalogue (CISA KEV, fetched 2026-10-21 07:34 UTC). The due date applies to US federal agencies under BOD 22-01.

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

Affected products

  • apache activemq
  • apache activemq broker

Coverage1 article

References

Facts sourced from NVD, FIRST EPSS, and CISA KEV. Last synced 2026-10-21 07:34 UTC.

  • CVSS & description: NVD 2.0, fetched 2026-10-21 05:34 UTC
  • EPSS: FIRST EPSS, fetched 2026-10-21 07:34 UTC; score date 2026-10-20
  • KEV: CISA KEV, fetched 2026-10-21 07:34 UTC