CVE-2021-43800

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    CVE-2021-43800

    Published: 6 Dec 2021Last Modified: 8 Jul 2026

    Summary:

    Details: Wiki.js is a wiki app built on Node.js. Prior to version 2.5.254, directory traversal outside of Wiki.js context is possible when a storage module with local asset cache fetching is enabled on a Windows host. A malicious user can potentially read any file on the file system by crafting a special URL that allows for directory traversal. This is only possible on a Wiki.js server running on Windows, when a storage module implementing local asset cache (e.g Local File System or Git) is enabled and that no web application firewall solution (e.g. cloudflare) strips potentially malicious URLs. Commit number 414033de9dff66a327e3f3243234852f468a9d85 fixes this vulnerability by sanitizing the path before it is passed on to the storage module. The sanitization step removes any windows directory traversal sequences from the path. As a workaround, disable any storage module with local asset caching capabilities (Local File System, Git).

    References: https://github.com/Requarks/wiki/releases/tag/2.5.254, https://github.com/Requarks/wiki/commit/414033de9dff66a327e3f3243234852f468a9d85, https://github.com/Requarks/wiki/security/advisories/GHSA-r363-73gj-6j25

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -414033de9dff66a327e3f3243234852f468a9d85

    Affected versions

    2.5.219
    2.5.214
    2.5.201
    2.5.197
    2.5.191
    2.5.170
    2.5.159
    2.5.144
    2.5.136
    2.5.132
    2.5.126
    2.5.121
    2.5.117
    2.5.105

    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-2021-43800 | CVE-DB