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 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.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://lists.apache.org/thread/j9vmlc410ht5f28fc98gx75jcbq62j00	Mailing List Vendor Advisory
http://www.openwall.com/lists/oss-security/2026/05/31/17	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:apache:activemq::::::::
	cpe:2.3:a:apache:activemq::::::::
	cpe:2.3:a:apache:activemq_web::::::::
	cpe:2.3:a:apache:activemq_web::::::::

History

No history.

Information

Published : 2026-06-01 09:16

Updated : 2026-07-22 07:10

NVD link : CVE-2026-42253

Mitre link : CVE-2026-42253

CVE.ORG link : CVE-2026-42253

JSON object : View

Products Affected

apache

activemq
activemq_web

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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This can allow overwriting and injecting security headers by setting them on JMS messages that are returned by the servlet.\n\nThis 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.\n\nUsers are recommended to upgrade to version 5.19.7 or 6.2.6, which fixes the issue.\u00a0The MessageServlet has now been deprecated and disabled by default."}, {"lang": "es", "value": "Vulnerabilidad de Neutralizaci\u00f3n Incorrecta de la Entrada Durante la Generaci\u00f3n de P\u00e1ginas Web ('cross-site scripting') en Apache ActiveMQ, Apache ActiveMQ Web.\n\nEl MessageServlet en la API de la consola web de ActiveMQ copia cada propiedad de mensaje JMS en un encabezado de respuesta HTTP sin ninguna validaci\u00f3n. Esto puede permitir sobrescribir e inyectar encabezados de seguridad al establecerlos en mensajes JMS que son devueltos por el servlet.\n\nEste problema afecta a Apache ActiveMQ: anterior a 5.19.7, desde 6.0.0 anterior a 6.2.6; Apache ActiveMQ Web: anterior a 5.19.7, desde 6.0.0 anterior a 6.2.6.\n\nSe recomienda a los usuarios actualizar a la versi\u00f3n 5.19.7 o 6.2.6, que corrige el problema. El MessageServlet ahora ha sido declarado obsoleto y deshabilitado por defecto."}], "lastModified": "2026-07-22T07:10:00.107", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "793E68E6-9024-4518-B062-42B2DE5BB555", "versionEndExcluding": "5.19.7"}, {"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FFF44DB9-1850-4B5F-AD0F-55CB5219AB22", "versionEndExcluding": "6.2.6", "versionStartIncluding": "6.0.0"}, {"criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "F12E08BD-3094-4096-8162-B98B0004B5AF", "versionEndExcluding": "5.19.7"}, {"criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FAFD6F1A-7E2E-4611-A84F-BA7A28E555D2", "versionEndExcluding": "6.2.6", "versionStartIncluding": "6.0.0"}], "operator": "OR"}]}], "sourceIdentifier": "security@apache.org"}