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Medium severity6.1NVD Advisory· Published Jun 1, 2026· Updated Jun 1, 2026

CVE-2026-42253

CVE-2026-42253

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

5
  • Apache/Activemq2 versions
    cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*range: <5.19.7
    • (no CPE)range: <5.19.7, >=6.0.0 <6.2.6
  • Apache/Activemq Web2 versions
    cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*range: <5.19.7
    • (no CPE)range: <5.19.7, >=6.0.0 <6.2.6
  • osv-coords
    pkg:bitnami/activemq
    Range: < 5.19.7

Patches

Vulnerability mechanics

References

2

News mentions

2