Cursor Desktop sandbox escape via agent-controlled working directory_CVE-2026-50548

{
    "lastseen": "",
    "description": "Cursor is a code editor built for programming with AI. Prior to 3.0, Cursor runs agent terminal commands in a sandbox by default, and the sandbox grants write access to the command's working directory. A flaw was identified in how the agent could modify the working_directory parameter, which could cause the sandbox to include writable paths outside the intended workspace. A malicious agent could set working_directory to a sensitive location and write arbitrary files outside the workspace under the user's privileges. This enables non-sandboxed Remote Code Execution \u2014 for example by overwriting the cursorsandbox helper so later commands run unsandboxed \u2014 with no user interaction beyond a benign prompt. This vulnerability is fixed in 3.0.",
    "published": "2026-06-25T18:47:56.569Z",
    "modified": "2026-06-25T19:02:54.556Z",
    "type": "cve",
    "title": "Cursor Desktop sandbox escape via agent-controlled working directory",
    "source": "GitHub_M",
    "references": "https://github.com/cursor/cursor/security/advisories/GHSA-3p48-7v9f-v5cw",
    "id": "CVE-2026-50548",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "cursor cursor < 3.0",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "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": "cursor",
    "version": "< 3.0",
    "vendor": "cursor",
    "ai_description": "Sandbox escape vulnerability in Cursor Desktop via agent-controlled working directory, allowing for non-sandboxed Remote Code Execution",
    "ai_severity": "Critical",
    "ai_vendor": "Cursor",
    "ai_product": "Cursor Desktop",
    "ai_version": "< 3.0",
    "ai_score": 9.3
}