node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction_CVE-2026-26960

{
    "lastseen": "",
    "description": "node-tar is a full-featured Tar for Node.js. When using default options in versions 7.5.7 and below, an attacker-controlled archive can create a hardlink inside the extraction directory that points to a file outside the extraction root, enabling arbitrary file read and write as the extracting user. Severity is high because the primitive bypasses path protections and turns archive extraction into a direct filesystem access primitive. This issue has been fixed in version 7.5.8.",
    "published": "2026-02-20T01:07:52.979Z",
    "modified": "2026-02-20T01:07:52.979Z",
    "type": "cve",
    "title": "node-tar has Arbitrary File Read/Write via Hardlink Target Escape Through Symlink Chain in Extraction",
    "source": "GitHub_M",
    "references": "https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx\nhttps://github.com/isaacs/node-tar/commit/2cb1120bcefe28d7ecc719b41441ade59c52e384\nhttps://github.com/isaacs/node-tar/commit/d18e4e1f846f4ddddc153b0f536a19c050e7499f",
    "id": "CVE-2026-26960",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "isaacs node-tar < 7.5.8",
    "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": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "node-tar",
    "version": "< 7.5.8",
    "vendor": "isaacs",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}