OS Command Injection in Wekan - #VU139849
Published: July 28, 2026
Vulnerability identifier: #VU139849
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: N/A
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: wekan.github.io
Affected software:
Wekan
Wekan
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to command injection in models/fileValidation.js when processing an uploaded file path with the external antivirus scanner command. A remote user can upload a file with a specially crafted filename to execute arbitrary code.
Exploitation occurs in the asyncExec-based external scanner path and results in code execution as the Wekan server process.
Remediation
Install security update from vendor's website.