Privilege escalation to the `CAP_NET_RAW` capability via the `programs.captive-browser` NixOS module_CVE-2026-25740

{
    "lastseen": "",
    "description": "captive browser, a dedicated Chrome instance to log into captive portals without messing with DNS settings. In 25.05 and earlier, when programs.captive-browser is enabled, any user of the system can run arbitrary commands with the CAP_NET_RAW capability (binding to privileged ports, spoofing localhost traffic from privileged services...). This vulnerability is fixed in 25.11 and 26.05.",
    "published": "2026-02-09T20:17:16.777Z",
    "modified": "2026-02-09T20:17:16.777Z",
    "type": "cve",
    "title": "Privilege escalation to the `CAP_NET_RAW` capability via the `programs.captive-browser` NixOS module",
    "source": "GitHub_M",
    "references": "https://github.com/NixOS/nixpkgs/security/advisories/GHSA-wc3r-c66x-8xmc\nhttps://github.com/NixOS/nixpkgs/pull/487775\nhttps://github.com/NixOS/nixpkgs/pull/487779",
    "id": "CVE-2026-25740",
    "bulletinFamily": "",
    "cwe": [
        "CWE-250"
    ],
    "cvelist": null,
    "sourceData": "NixOS nixpkgs <= 25.05",
    "sourceHref": "",
    "cvss": {
        "score": 5.8,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/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": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "nixpkgs",
    "version": "<= 25.05",
    "vendor": "NixOS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}