Description
Mattermost fails to properly check the creator of an attached file when adding the file to a draft post, potentially exposing unauthorized file information.
Problem types
Product status
Any version
Any version
Any version
7.8.11
8.0.3
8.1.2
Credits
vultza (vultza) 
References
mattermost.com/security-updates
mattermost.com/security-updates