Microsoft APM: plugin.json component paths escape plugin root and copy arbitrary host files during install_CVE-2026-44641

{
    "lastseen": "",
    "description": "Microsoft APM is an open-source, community-driven dependency manager for AI agents. Prior to 0.8.12, Microsoft APM normalizes marketplace plugins by copying plugin components referenced in plugin.json into .apm/. The manifest fields agents, skills, commands, and hooks are attacker-controlled, but the implementation does not enforce that those paths remain inside the plugin directory. A malicious plugin can therefore use absolute paths or ../ traversal paths to copy arbitrary readable host files or directories from the installer's machine during apm install. This vulnerability is fixed in 0.8.12.",
    "published": "2026-05-15T16:00:23.198Z",
    "modified": "2026-05-15T16:00:23.198Z",
    "type": "cve",
    "title": "Microsoft APM: plugin.json component paths escape plugin root and copy arbitrary host files during install",
    "source": "GitHub_M",
    "references": "https://github.com/microsoft/apm/security/advisories/GHSA-xhrw-5qxx-jpwr",
    "id": "CVE-2026-44641",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22",
        "CWE-73"
    ],
    "cvelist": null,
    "sourceData": "microsoft apm < 0.8.12",
    "sourceHref": "",
    "cvss": {
        "score": 7.1,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/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": "",
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            "privilegesRequired": "",
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            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "apm",
    "version": "< 0.8.12",
    "vendor": "microsoft",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}