CVE-2026-42253

MEDIUM

Apache ActiveMQ, Apache ActiveMQ Web: HTTP Response Header Injection via JMS Message Properties

Title source: cna
STIX 2.1

Description

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web. The MessageServlet in the ActiveMQ web console API copies every JMS message property into an HTTP response header without any validation. This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet. This issue affects Apache ActiveMQ: before 5.19.7, from 6.0.0 before 6.2.6; Apache ActiveMQ Web: 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. The MessageServlet has now been deprecated and disabled by default.

References (2)

Core 2

Scores

CVSS v3 6.1
EPSS 0.0042
EPSS Percentile 33.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (6)
apache/activemq < 5.19.7
apache/activemq_web < 5.19.7
Apache Software Foundation/Apache ActiveMQ < 5.19.7
Apache Software Foundation/Apache ActiveMQ 6.0.0 - 6.2.6
Apache Software Foundation/Apache ActiveMQ Web < 5.19.7
Apache Software Foundation/Apache ActiveMQ Web 6.0.0 - 6.2.6
Published Jun 01, 2026
Tracked Since Jun 01, 2026