Apache ActiveMQ, Apache ActiveMQ Web: HTTP Response Header Injection via JMS Message Properties_CVE-2026-42253

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-01T07:23:50.962Z",
    "modified": "2026-06-01T13:12:40.804Z",
    "type": "cve",
    "title": "Apache ActiveMQ, Apache ActiveMQ Web: HTTP Response Header Injection via JMS Message Properties",
    "source": "apache",
    "references": "https://lists.apache.org/thread/j9vmlc410ht5f28fc98gx75jcbq62j00",
    "id": "CVE-2026-42253",
    "bulletinFamily": "",
    "cwe": [
        "CWE-79"
    ],
    "cvelist": null,
    "sourceData": "Apache Software Foundation Apache ActiveMQ 0\nApache Software Foundation Apache ActiveMQ 6.0.0\nApache Software Foundation Apache ActiveMQ Web 0\nApache Software Foundation Apache ActiveMQ Web 6.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 6.1,
        "severity": "MEDIUM",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
        "version": "3.1"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "Apache ActiveMQ",
    "version": "0",
    "vendor": "Apache Software Foundation",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}