CVE-2026-52891 — Wekan: Shell Injection via Avatar Upload
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() fo…
Published: 2026-07-15 · CVSS: 9.9 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7