PT-2026-60317 · Wekan · Wekan

Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-52891

Mitre

CVSS v3.1

9.9

Critical

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Wekan is open source kanban built with Meteor. Prior to 9.07, Wekan avatar upload functionality embeds user-supplied filenames into paths later passed to child process.exec() for MIME-type detection. Because models/avatars.js and models/fileValidation.js used a shell command with the avatar filename, shell metacharacters such as backticks and $() in the filename could execute commands on the server. This issue is fixed in version 9.07.

Fix

Argument Injection

OS Command Injection

Weakness Enumeration

CWE-88

CWE-78

Related Identifiers

CVE-2026-52891

Affected Products

Wekan

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-52891 · Security Note
• https://github.com/wekan/wekan/security/advisories/GHSA-35j7-h385-2q9g · Note
• https://github.com/wekan/wekan/releases/tag/v9.07 · Note
• https://github.com/wekan/wekan/commit/a4c74a5980e9f778eb444fd346f32aa3d16786a9 · Note