discourse-chat is a chat plugin for the Discourse application. Versions prior to 0.4 are vulnerable to an exposure of sensitive information, where an attacker who knows the message ID for a channel they do not have access to can view that message using the chat message lookup endpoint, primarily affecting direct message channels. There are no known workarounds for this issue, and users are advised to update the plugin.
The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
| Link | Tags |
|---|---|
| https://github.com/discourse/discourse-chat/security/advisories/GHSA-r979-jhp2-3f6h | third party advisory |