Apache ActiveMQ Improper Input Validation Vulnerability

Added to KEV
2026-04-16
Federal due date
2026-04-30
Vendor
Apache
Product
ActiveMQ
EPSS
99.3th percentile (score 0.835, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2026-34197

CISA short description

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

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.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.