Apache ActiveMQ Improper Input Validation Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH

8.8 / 10

Minimal Risk Critical

Vector Specification

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

Exploitation Likelihood

EPSS Prediction

59.64 %

Predictive Probability

Percentile Rank

98.3 th

Documented as more likely to be exploited than 98.3% of known CVEs.

Detection Date

Apr 16, 2026

Remediation Due

Apr 30, 2026

CISA Catalog Active

Threat Analysis

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

Remediation Directive

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

External Intelligence

https://activemq.apache.org/security-advisories.data/CVE-2026-34197-announcement.txt

NVD

National Vulnerability Database

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