Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration_CVE-2026-47107

{
    "lastseen": "",
    "description": "Windmill prior to 1.703.2 contains an incorrect default permissions vulnerability in nsjail sandbox configuration files where /etc is bind-mounted without read-write restrictions, allowing authenticated users to write arbitrary entries to /etc/hosts, /etc/resolv.conf, and /etc/ssl/certs/ca-certificates.crt from within script execution sandboxes. Attackers can exploit persistent poisoned entries across all subsequent script executions on the same worker pod to redirect hostnames, intercept DNS queries, perform transparent HTTPS man-in-the-middle attacks, and intercept WM_TOKEN JWTs to gain workspace-admin access to victim workspaces across tenants.",
    "published": "2026-05-19T16:42:55.144Z",
    "modified": "2026-05-19T18:36:27.927Z",
    "type": "cve",
    "title": "Windmill < 1.703.2 Incorrect Default Permissions in nsjail Configuration",
    "source": "VulnCheck",
    "references": "https://github.com/windmill-labs/windmill/releases/tag/v1.703.2\nhttps://github.com/windmill-labs/windmill/pull/9194\nhttps://github.com/windmill-labs/windmill/commit/f8467f38c8a053117ce62f96684cfb15ef792f08\nhttps://www.vulncheck.com/advisories/windmill-incorrect-default-permissions-in-nsjail-configuration",
    "id": "CVE-2026-47107",
    "bulletinFamily": "",
    "cwe": [
        "CWE-276"
    ],
    "cvelist": null,
    "sourceData": "windmill-labs windmill 0",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/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": "windmill",
    "version": "0",
    "vendor": "windmill-labs",
    "ai_description": "Incorrect default permissions in nsjail sandbox configuration files allow authenticated users to write arbitrary entries to system files and gain workspace-admin access to victim workspaces across tenants.",
    "ai_severity": "Critical",
    "ai_vendor": "Windmill Labs",
    "ai_product": "Windmill",
    "ai_version": "< 1.703.2",
    "ai_score": 9.3
}