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    CVE-2026-25890

    File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename and edit files. Prior to 2.57.1, an authenticated user can bypass the application's "Disallow" file path rules by modifying the request URL. By adding multiple slashes (e.g., //private/) to the path, the authorization check fails to match the rule, while the underlying filesystem resolves the path correctly, granting unauthorized access to restricted files. This vulnerability is fixed in 2.57.1.

    Published:Feb 9, 2026
    Last Modified:Apr 17, 2026
    EPS:Feb 9, 2026
    EPSS Score:0.00013
    CVSS Score:8.1

    Affected Products

    Vendor
    Filebrowser
    Product
    Filebrowser

    Exploits

    https://github.com/filebrowser/filebrowser/security/advisories/GHSA-4mh3-h929-w968https://github.com/mbanyamer/CVE-2026-25890-FileBrowser-Access-Control-Bypass

    Related CVEs

    CVE-2026-82238 (CVSS 2.3) — filebrowser from version 2.24.0 contains a race condition in the TUS upload handler that allows authenticated …
    CVE-2026-82237 (CVSS 2.3) — filebrowser through 2.63.23 does not remove share records when a shared file is renamed (only deletion trigger…
    CVE-2026-82236 (CVSS 2.3) — File Browser versions from 2.63.6 through 2.63.23 fail to clean up public share links when a privileged user d…
    CVE-2026-82235 (CVSS 8.2) — filebrowser through 2.63.23 fails to validate named pipes in directory archive and public download handlers, a…
    CVE-2026-62684 (CVSS 2.7) — File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files wit…
    CVE-2026-72838 (CVSS 7.1) — FileBrowser versions before 2.63.19 fail to enforce the declared Upload-Length in the TUS resumable-upload PAT…
    CVE-2026-72837 (CVSS 8.7) — File Browser versions before 2.63.20 fail to honor the createUserDir isolation in proxy and hook authenticatio…
    CVE-2026-72836 (CVSS 9.2) — FileBrowser before 2.63.19 does not account for case-insensitive filesystems when checking home directory owne…
    CVE-2026-72835 (CVSS 7.6) — filebrowser versions before v2.63.21 fail to canonicalize paths before evaluating access rules, allowing authe…
    CVE-2026-72834 (CVSS 5.3) — filebrowser before 2.63.19 contains a permission bypass in the /api/resources endpoint. The checksum (?checksu…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2026-25890 — Filebrowser (High 8.1) | CVE-DB