Detections
Analytics
CVE-2026-52891
critical
Description
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.
References
https://github.com/wekan/wekan/security/advisories/GHSA-35j7-h385-2q9g
https://github.com/wekan/wekan/releases/tag/v9.07
https://github.com/wekan/wekan/commit/a4c74a5980e9f778eb444fd346f32aa3d16786a9