File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in DeleteWithPathPrefix_CVE-2026-54097

{
    "lastseen": "",
    "description": "File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.6, a low-privileged authenticated user of filebrowser (with create + delete permissions in their own isolated scope) can silently destroy share-link records belonging to any other user \u2014 including the administrator \u2014 by performing a legitimate DELETE on a file in their own directory whose logical path happens to be a byte-prefix of another user's stored share.Link.Path. The file contents of the victim are not exposed, but the victim's share links are irrevocably wiped. This vulnerability is fixed in 2.63.6.",
    "published": "2026-06-25T17:40:18.235Z",
    "modified": "2026-06-25T17:40:18.235Z",
    "type": "cve",
    "title": "File Browser: Cross-user unauthorized share-link deletion via unbounded prefix match in DeleteWithPathPrefix",
    "source": "GitHub_M",
    "references": "https://github.com/filebrowser/filebrowser/security/advisories/GHSA-5ww9-jg6q-38r7\nhttps://github.com/filebrowser/filebrowser/commit/0231b7ebdfbe77a6c54027d30c4856c3fd81ee4d\nhttps://github.com/filebrowser/filebrowser/releases/tag/v2.63.6",
    "id": "CVE-2026-54097",
    "bulletinFamily": "",
    "cwe": [
        "CWE-639"
    ],
    "cvelist": null,
    "sourceData": "filebrowser filebrowser < 2.63.6",
    "sourceHref": "",
    "cvss": {
        "score": 7.2,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
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            "privilegesRequired": "",
            "userInteraction": "",
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            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "filebrowser",
    "version": "< 2.63.6",
    "vendor": "filebrowser",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}