CVE-2022-46159: Any authenticated Discourse user can create an unlisted topic

First published: Fri Dec 02 2022(Updated: )

Discourse is an open-source discussion platform. In version 2.8.13 and prior on the `stable` branch and version 2.9.0.beta14 and prior on the `beta` and `tests-passed` branches, any authenticated user can create an unlisted topic. These topics, which are not readily available to other users, can take up unnecessary site resources. A patch for this issue is available in the `main` branch of Discourse. There are no known workarounds available.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
Discourse Discourse	<=2.8.13
Discourse Discourse	=2.9.0-beta1
Discourse Discourse	=2.9.0-beta10
Discourse Discourse	=2.9.0-beta11
Discourse Discourse	=2.9.0-beta12
Discourse Discourse	=2.9.0-beta13
Discourse Discourse	=2.9.0-beta14
Discourse Discourse	=2.9.0-beta2
Discourse Discourse	=2.9.0-beta3
Discourse Discourse	=2.9.0-beta4
Discourse Discourse	=2.9.0-beta5
Discourse Discourse	=2.9.0-beta6
Discourse Discourse	=2.9.0-beta7
Discourse Discourse	=2.9.0-beta8

Remedy

https://github.com/discourse/discourse/commit/0ce38bd7bce862db251b882613ab7053ca777382

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