| Package | Affected versions | Patched versions |
|---|---|---|
| rocket.chat | ≥ 4.8.0, < 4.8.2< 4.7.5 | 4.8.24.7.5 |
An improper access control vulnerability exists in Rocket.Chat <v5, <v4.8.2 and <v4.7.5 due to input data in the getUsersOfRoom Meteor server method is not type validated, so that MongoDB query operator objects are accepted by the server, so that instead of a matching rid String a$regex query can be executed, bypassing the room access permission check for every but the first matching room.
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