SB2026072863 - OS Command Injection in Wekan

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Main Vulnerability Database SB2026072863

SB2026072863 - OS Command Injection in Wekan

Published: July 28, 2026

Security Bulletin ID SB2026072863
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) OS Command Injection (CVE-ID: CVE-2026-52891)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: 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


The vulnerability allows a remote user to execute arbitrary code.

The vulnerability exists due to command injection in the avatar upload functionality when processing a user-supplied filename for MIME-type detection via child_process.exec(). A remote user can upload an avatar with a specially crafted filename to execute arbitrary code.

The issue occurs because shell metacharacters in the uploaded avatar filename are interpreted as commands during MIME-type detection.


Remediation

Install update from vendor's website.

References