8.1

CVE-2026-42588: apache software foundation apache activemq Improper Input Validation

CVSS: 8.1v3.1HighAnalyzed
AliasesUBUNTU-CVE-2026-42588DEBIAN-CVE-2026-42588CGA-28c2-vqcf-pcjm
Published 01-06-2026Last modified 02-06-2026
Open JSON

Vulnerability summary

CVE-2026-42588 is a high (CVSS 8.1) Improper Input Validation vulnerability in apache software foundation apache activemq. EPSS estimates a 0.66% chance of exploitation in the next 30 days, higher than 50.3% of scored vulnerabilities.

Overall risk
33/100
0100
Medium · default modelHow is this calculated?
CVSS score
8.1/10
010
High · v3.1 (CVE.org)
EPSS score
0.66%
0%100%
Low · -0.08 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-5G9Q-HXX2-VMRQ

Timeline

  1. 01-06-2026
    PublishedVulnerability first disclosed.
  2. 02-06-2026
    Last modifiedVulnerability information updated.

Description

Improper Input Validation, Improper Control of Generation of Code ('Code Injection') vulnerability in Apache ActiveMQ Broker, Apache ActiveMQ All, 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). An authenticated attacker can invoke these operations with a crafted discovery URI that triggers the VM transport's brokerConfig parameter using the "masterslave:// " URL which can allow loading a 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 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ All: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6. Users are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue.

CVSS metrics

6 scores · 6 sources · 1 version

EPSS trend

Probability

0.66%

Chance of exploitation in the next 30 days

Percentile

50%

Versus all other CVEs

30-day change

-0.08 pp

From 0.74% on 18-09-2026

18-09-202618-10-2026
EPSS score
0.66%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard6 products
  • apache-activemq-6.1All versions (No fix recorded)
  • apache-activemq-fips-6.1All versions (No fix recorded)
  • apache-tomee-plume< 10.1.5-r2
  • apache-tomee-plus< 10.1.5-r2
  • geoserver-2.27-community< 2.27.5-r15
Apache software foundation3 products
Org.apache.activemq3 products
  • activemq-all< 5.19.7 | ≥ 6.0.0, < 6.2.6
  • activemq-broker< 5.19.7 | ≥ 6.0.0, < 6.2.6
  • apache-activemq< 5.19.7 | ≥ 6.0.0, < 6.2.6
Apache2 products
Debian1 product
  • activemqAll versions (No fix recorded)
Ubuntu1 product
  • activemqAll versions (No fix recorded)

6 vendors · 16 products

References

10 links