Signal is active with 1 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD 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.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
CVE-2026-52891 Remote Code Execution via Shell Metacharacters in Wekan Avatar Upload Before 9.07 https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-52891
Post summary
A remote code execution vulnerability has been disclosed in Wekan’s avatar upload (prior to version 9.07) that allows injection of shell metacharacters; no PoC or exploitation details are provided.