CVE catalog
CVE-2026-42253
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 e
- Severity
- Medium · CVSS 6.1
- Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.11% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | activemq | sid | 5.17.6+dfsg-2 | vulnerable |
| Debian | activemq | trixie | 5.17.6+dfsg-2 | vulnerable |
| Debian | activemq | bookworm | 5.17.2+dfsg-2+deb12u1 | vulnerable |
| Debian | activemq | bookworm-security | 5.17.2+dfsg-2+deb12u1 | vulnerable |
| Cpe | activemq | Not reported | Not reported | vulnerable |
| Cpe | activemq | Not reported | 5.19.7 | fixed |
| Cpe | activemq | Not reported | 6.2.6 | fixed |
| Cpe | activemq_web | Not reported | 5.19.7 | fixed |
| Cpe | activemq_web | Not reported | 6.2.6 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | activemq | source | sid | (unfixed) | not yet assigned | Not reported | [1141385] |
| Debian | activemq | source | trixie | (unfixed) | not yet assigned | Not reported | [1141385] |
| Debian | activemq | source | bookworm | (unfixed) | not yet assigned | Not reported | [1141385] |
| Cpe | activemq | cpe | Not reported | 5.19.7 | Not reported | Not reported | Not reported |
| Cpe | activemq | cpe | Not reported | 6.2.6 | Not reported | Not reported | Not reported |
| Cpe | activemq_web | cpe | Not reported | 5.19.7 | Not reported | Not reported | Not reported |
| Cpe | activemq_web | cpe | Not reported | 6.2.6 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [activemq]Affected
Details (4)
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
- [libactivemq-java]Affected
Source package: [activemq]
Details (4)
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookwormAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
5.17.2+dfsg-2+deb12u1· all · bookworm-securityAffected
nvd · activemq · debian · bookworm; nvd · activemq · debian · 12
[Debian 13 (Trixie)]
- [activemq]Affected
Details (2)
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
- [libactivemq-java]Affected
Source package: [activemq]
Details (2)
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
5.17.6+dfsg-2· all · trixieAffected
nvd · activemq · debian · 13
Observed:
References
- [https://nvd.nist.gov/vuln/detail/CVE-2026-42253]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-42253]
- [https://security-tracker.debian.org/tracker/CVE-2026-42253]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-1741.json]
[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database]