Apache ActiveMQ Vulnerable to Cross-site Scripting

CVE-2026-41043 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.

An authenticated attacker can show malicious content when browsing queues in the web console by overriding the content type to be HTML (instead of XML) and by injecting HTML into a JMS selector field.

This issue affects Apache ActiveMQ: before 5.19.6, from 6.0.0 before 6.2.5; Apache ActiveMQ Web: before 5.19.6, from 6.0.0 before 6.2.5.

Users are recommended to upgrade to version 6.2.5 or 5.19.6, which fixes the issue.

Basic information

Type
reviewed
Severity
medium
Advisory on GitHub
Open advisory ↗
Repository advisory
—
Source code
Browse source ↗
Published (advisory)
2026-04-24 12:30:27 UTC
Updated
2026-05-05 00:12:52 UTC
GitHub reviewed
2026-05-05 00:12:49 UTC
NVD published
2026-04-24

EPSS Score

Score Percentile
0.14% 34.33%

CVSS Scores

Base score Version Severity Vector
6.5 3.1 —
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-2jp3-2923-9h52 ↗
CVE CVE-2026-41043 ↗

CWEs

CWE id Name
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected packages (6)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven org.apache.activemq:apache-activemq < 5.19.6 5.19.6 —
maven org.apache.activemq:activemq-all < 5.19.6 5.19.6 —
maven org.apache.activemq:activemq-broker < 5.19.6 5.19.6 —
maven org.apache.activemq:apache-activemq >= 6.0.0, < 6.2.5 6.2.5 —
maven org.apache.activemq:activemq-all >= 6.0.0, < 6.2.5 6.2.5 —
maven org.apache.activemq:activemq-broker >= 6.0.0, < 6.2.5 6.2.5 —

References

cvelogic Threat Intelligence