What is CVE-2026-34197?

CVE-2026-34197 is a high-severity vulnerability in Apache Activemq, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-04-07.

How severe is CVE-2026-34197?

High severity. CVSS v3 base score is 8.8 out of 10.

Is CVE-2026-34197 known to be exploited?

Yes. CVE-2026-34197 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-16), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.

RCE in Apache Activemq

CVE-2026-34197

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…

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.967 (99.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: 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
Apache Software Foundation Activemq — versions 0, 6.0.0
Apache Software Foundation Activemq All — versions 0, 6.0.0
Apache Software Foundation Activemq Broker — versions 0, 6.0.0

Weakness classification (CWE)

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2026-04-16. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2026-04-30.

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.

Public proof-of-concept exploits

References

security@apache.org (vendor-advisory, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)
134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)
0b0ca135-0b70-47e7-9f44-1890c2a1c46c (Third Party Advisory)

Frequently asked questions

What is CVE-2026-34197?: CVE-2026-34197 is a high-severity vulnerability in Apache Activemq, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-04-07.
How severe is CVE-2026-34197?: High severity. CVSS v3 base score is 8.8 out of 10.
Is CVE-2026-34197 known to be exploited?: Yes. CVE-2026-34197 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2026-04-16), indicating it is being actively exploited. 18 public proof-of-concept repositories are indexed.