Path traversal in Wiki.js - CVE-2021-43800
Published: December 4, 2021 / Updated: April 28, 2026
Vulnerability identifier: #VU128260
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-43800
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Wiki.js
Wiki.js
Software vendor:
Requarks.io
Requarks.io
Description
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to path traversal in asset cache fetching with storage modules implementing local asset cache when handling a specially crafted URL on Windows. A remote user can send a specially crafted URL to disclose sensitive information.
This is only possible on Windows hosts when a storage module implementing local asset cache is enabled, such as Local File System or Git, and no web application firewall strips malicious URLs.
Remediation
Install security update from vendor's website.