7-Zip – Mark-of-the-Web Bypass via RAR5 Alternate Data Stream Name Collision_CVE-2026-58052

{
    "lastseen": "",
    "description": "7-Zip for Windows through 26.02 fails to preserve the Mark-of-the-Web when extracting a crafted RAR5 archive, because its guard that suppresses an archive-supplied Zone.Identifier stream matches the exact name 'Zone.Identifier' while a RAR5 STM record named ':Zone.Identifier:$DATA' is not matched and NTFS canonicalizes it to the same stream, overwriting the propagated Internet-zone marker with ZoneId=0. A second STM record named '::$DATA' overwrites the extracted file's default data stream, letting an attacker defeat SmartScreen/MotW warnings and spoof file content.",
    "published": "2026-06-28T01:32:54.971Z",
    "modified": "2026-06-28T01:32:54.971Z",
    "type": "cve",
    "title": "7-Zip - Mark-of-the-Web Bypass via RAR5 Alternate Data Stream Name Collision",
    "source": "VulnCheck",
    "references": "https://github.com/bikini/exploitarium/tree/main/7zip-rar5-motw-chain-poc\nhttps://github.com/ip7z/7zip\nhttps://www.vulncheck.com/advisories/7-zip-mark-of-the-web-bypass-via-rar5-alternate-data-stream-name-collision",
    "id": "CVE-2026-58052",
    "bulletinFamily": "",
    "cwe": [
        "CWE-693"
    ],
    "cvelist": null,
    "sourceData": "7-Zip 7-Zip 0",
    "sourceHref": "",
    "cvss": {
        "score": 3.3,
        "severity": "LOW",
        "vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/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": "7-Zip",
    "version": "0",
    "vendor": "7-Zip",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}