Apache ActiveMQ's Improper Input Validation Enables Code Injection Affecting Both ActiveMQ and Broker Deployments; CISA's April 30th KEV Deadline Has Passed

Last refreshed2026-09-27

Status: KEV | Advisory ID: CVE-2026-34197

Key Details

CVE	CVE-2026-34197
Vulnerability Name	Apache ActiveMQ Improper Input Validation Vulnerability
Affected products	Apache ActiveMQ and Apache ActiveMQ Broker
Exploitation status	Listed in CISA's Known Exploited Vulnerabilities (KEV) catalog, indicating confirmed active exploitation.
Classified as	CWE-20 (Improper Input Validation)
KEV listing	Added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2026-04-16.
Exploitation prediction (EPSS)	15.49% probability of exploitation in the next 30 days (97% percentile) -- FIRST.org's EPSS model.
Federal remediation deadline	2026-04-30 (CISA KEV, Binding Operational Directive).

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Apache	ActiveMQ
Apache	ActiveMQ Broker

Vendor

Product

Affected Versions

Patch Status

Apache

ActiveMQ

Apache

ActiveMQ Broker

Subsystems	General OT
Sectors	Multiple

What to Know

Apache ActiveMQ contains an improper input validation vulnerability that allows for code injection.

What to Do

Monitor Apache's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-34197
CVE	https://www.cve.org/CVERecord?id=CVE-2026-34197

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-34197

CVE

https://www.cve.org/CVERecord?id=CVE-2026-34197

KEV Required Action

Field	Value
KEV Link	https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Date Added to KEV	2026-04-16
Required Action 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.

Field

Value

KEV Link

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Date Added to KEV

2026-04-16

Required Action 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.