CVE-2026-42253

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{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.activemq:apache-activemq", "product": "Apache ActiveMQ", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "5.19.7", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.2.6", "status": "affected", "version": "6.0.0", "versionType": "semver"}]}, {"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.activemq:activemq-web", "product": "Apache ActiveMQ Web", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "5.19.7", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "6.2.6", "status": "affected", "version": "6.0.0", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "matchCriteriaId": "793E68E6-9024-4518-B062-42B2DE5BB555", "versionEndExcluding": "5.19.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:activemq:*:*:*:*:*:*:*:*", "matchCriteriaId": "FFF44DB9-1850-4B5F-AD0F-55CB5219AB22", "versionEndExcluding": "6.2.6", "versionStartIncluding": "6.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*", "matchCriteriaId": "F12E08BD-3094-4096-8162-B98B0004B5AF", "versionEndExcluding": "5.19.7", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:activemq_web:*:*:*:*:*:*:*:*", "matchCriteriaId": "FAFD6F1A-7E2E-4611-A84F-BA7A28E555D2", "versionEndExcluding": "6.2.6", "versionStartIncluding": "6.0.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Apache ActiveMQ, Apache ActiveMQ Web.\n\nThe MessageServlet in the ActiveMQ web console API copies every JMS message\nproperty 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.\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."}], "id": "CVE-2026-42253", "lastModified": "2026-07-22T07:10:00.107", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42253", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-06-01T13:12:19.333750Z", "version": "2.0.3"}}]}, "published": "2026-06-01T09:16:18.673", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Vendor Advisory"], "url": "https://lists.apache.org/thread/j9vmlc410ht5f28fc98gx75jcbq62j00"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://www.openwall.com/lists/oss-security/2026/05/31/17"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@apache.org", "type": "Secondary"}]}

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