An information disclosure vulnerability exists in Rocket.Chat <v5, <v4.8.2 and <v4.7.5 since the getReadReceipts Meteor server method does not properly filter user inputs that are passed to MongoDB queries, allowing $regex queries to enumerate arbitrary Message IDs.

A cleartext transmission of sensitive information exists in Rocket.Chat <v5, <v4.8.2 and <v4.7.5 relating to Oauth tokens by having the permission "view-full-other-user-info", this could cause an oauth token leak in the product.

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.

An information disclosure vulnerability exists in Rocket.Chat <v5 due to the getUserMentionsByChannel meteor server method discloses messages from private channels and direct messages regardless of the users access permission to the room.

An information disclosure vulnerability exists in Rocket.Chat <v4.7.5 which allowed the "users.list" REST endpoint gets a query parameter from JSON and runs Users.find(queryFromClientSide). This means virtually any authenticated user can access any data (except password hashes) of any user authenticated.

An information disclosure vulnerability exists in Rocket.Chat <v5, <v4.8.2 and <v4.7.5 due to the actionLinkHandler method was found to allow Message ID Enumeration with Regex MongoDB queries.

A cleartext storage of sensitive information exists in Rocket.Chat <v4.6.4 due to Oauth token being leaked in plaintext in Rocket.chat logs.

A SQL injection vulnerability exists in Rocket.Chat <v3.18.6, <v4.4.4 and <v4.7.3 which can allow an attacker to retrieve a reset password token through or a 2fa secret.

An improper authentication vulnerability exists in Rocket.Chat Mobile App <4.14.1.22788 that allowed an attacker with physical access to a mobile device to bypass local authentication (PIN code).

A link preview rendering issue in Rocket.Chat versions before 3.9 could lead to potential XSS attacks.

Rocket.Chat is an open-source fully customizable communications platform developed in JavaScript. In Rocket.Chat before versions 3.11.3, 3.12.2, and 3.13 an issue with certain regular expressions could lead potentially to Denial of Service. This was fixed in versions 3.11.3, 3.12.2, and 3.13.

A sanitization vulnerability exists in Rocket.Chat server versions <3.13.2, <3.12.4, <3.11.4 that allowed queries to an endpoint which could result in a NoSQL injection, potentially leading to RCE.

An information disclosure vulnerability exists in the Rocket.Chat server fixed v3.13, v3.12.2 & v3.11.3 that allowed email addresses to be disclosed by enumeration and validation checks.

Rocket.Chat before 3.11, 3.10.5, 3.9.7, 3.8.8 is vulnerable to persistent cross-site scripting (XSS) using nested markdown tags allowing a remote attacker to inject arbitrary JavaScript in a message. This flaw leads to arbitrary file read and RCE on Rocket.Chat desktop app.

Rocket.Chat server before 3.9.0 is vulnerable to a self cross-site scripting (XSS) vulnerability via the drag & drop functionality in message boxes.

The `specializedRendering` function in Rocket.Chat server before 3.9.2 allows a cross-site scripting (XSS) vulnerability by way of the `value` parameter.

An email address enumeration vulnerability exists in the password reset function of Rocket.Chat through 3.9.1.

Rocket.Chat before 0.74.4, 1.x before 1.3.4, 2.x before 2.4.13, 3.x before 3.7.3, 3.8.x before 3.8.3, and 3.9.x before 3.9.1 mishandles SAML login.