CVE-2023-28357
Medium
Description
A vulnerability has been identified in Rocket.Chat, where the ACL checks in the Slash Command /mute occur after checking whether a user is a member of a given channel, leaking private channel members to unauthorized users. This allows authenticated users to enumerate whether a username is a member of a channel that they do not have access to.
SeverityMedium
CVSS4.3
Exploit probability—
Product
Rocket.chat
PublishedMay 11, 2023
First seenMay 11, 2023
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- rocket.chat rocket.chat6.0.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| rocket.chat rocket.chat | v < 6.0.0 | 6.0.0 |
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