FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion_CVE-2026-44542

{
    "lastseen": "",
    "description": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner\u2019s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta.",
    "published": "2026-05-14T17:07:30.602Z",
    "modified": "2026-05-14T17:07:30.602Z",
    "type": "cve",
    "title": "FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion",
    "source": "GitHub_M",
    "references": "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-fwj3-42wh-8673",
    "id": "CVE-2026-44542",
    "bulletinFamily": "",
    "cwe": [
        "CWE-22"
    ],
    "cvelist": null,
    "sourceData": "gtsteffaniak filebrowser < 1.3.1-stable\ngtsteffaniak filebrowser < 1.3.9-beta",
    "sourceHref": "",
    "cvss": {
        "score": 9.1,
        "severity": "CRITICAL",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
        "version": "3.1"
    },
    "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": "filebrowser",
    "version": "< 1.3.1-stable",
    "vendor": "gtsteffaniak",
    "ai_description": "Unauthenticated path traversal vulnerability in FileBrowser Quantum public share delete, allowing arbitrary file deletion",
    "ai_severity": "Critical",
    "ai_vendor": "gtsteffaniak",
    "ai_product": "FileBrowser Quantum",
    "ai_version": "< 1.3.1-stable, < 1.3.9-beta",
    "ai_score": 9.1
}