Mattermost versions 10.5.x <= 10.5.1, 9.11.x <= 9.11.9 fail to check if a file has been deleted when creating a bookmark which allows an attacker who knows the IDs of deleted files to obtain metadata of the files via bookmark creation.
Solution:
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.
Link | Tags |
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https://mattermost.com/security-updates |