Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory_CVE-2026-42497

{
    "lastseen": "",
    "description": "Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory.\n\n_make_special_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.\n\nA subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in _extract_file() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.",
    "published": "2026-05-26T00:17:50.656Z",
    "modified": "2026-05-28T13:14:01.484Z",
    "type": "cve",
    "title": "Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory",
    "source": "CPANSec",
    "references": "https://github.com/jib/archive-tar-new/commit/17c873492a05eddc0de18c1485e0b2cccd5a9158.patch\nhttps://metacpan.org/release/BINGOS/Archive-Tar-3.08/changes\nhttps://www.cve.org/CVERecord?id=CVE-2026-42496",
    "id": "CVE-2026-42497",
    "bulletinFamily": "",
    "cwe": [
        "CWE-59",
        "CWE-732"
    ],
    "cvelist": null,
    "sourceData": "BINGOS Archive::Tar 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/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": "Archive::Tar",
    "version": "0",
    "vendor": "BINGOS",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}