Gotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arbitrary File Rename and Move_CVE-2026-40893

{
    "lastseen": "",
    "description": "Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg only checks if the tag is exactly FileName, so System:FileName slips right through and ExifTool happily renames the file. This allows remote attackers to move, rename, and change permissions for arbitrary files. This vulnerability is fixed in 8.31.0.",
    "published": "2026-05-14T15:18:27.758Z",
    "modified": "2026-05-14T15:18:27.758Z",
    "type": "cve",
    "title": "Gotenberg: ExifTool Dangerous Tag Blocklist Bypass via Group-Prefixed Tag Names Allows Arbitrary File Rename and Move",
    "source": "GitHub_M",
    "references": "https://github.com/gotenberg/gotenberg/security/advisories/GHSA-62p3-hvxx-fxg4",
    "id": "CVE-2026-40893",
    "bulletinFamily": "",
    "cwe": [
        "CWE-73",
        "CWE-184"
    ],
    "cvelist": null,
    "sourceData": "gotenberg gotenberg < 8.31.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.2,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:L",
        "version": "3.1"
    },
    "cvss2": [],
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
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        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "gotenberg",
    "version": "< 8.31.0",
    "vendor": "gotenberg",
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    "ai_score": 0
}