CVE-2023-23622
Discourse: Presence of read restricted topics may be leaked if tagged with a tag that is visible to all users
- State
- Published
- Severity
- 4.3 Medium
- Published
- Mar 17, 2023
- Updated
- Feb 25, 2025
- Reserved
- Jan 16, 2023
Description
Discourse is an open-source discussion platform. Prior to version 3.0.1 of the `stable` branch and version 3.1.0.beta2 of the `beta` and `tests-passed` branches, the count of topics displayed for a tag is a count of all regular topics regardless of whether the topic is in a read restricted category or not. As a result, any users can technically poll a sensitive tag to determine if a new topic is created in a category which the user does not have excess to.
In version 3.0.1 of the `stable` branch and version 3.1.0.beta2 of the `beta` and `tests-passed` branches, the count of topics displayed for a tag defaults to only counting regular topics which are not in read restricted categories. Staff users will continue to see a count of all topics regardless of the topic's category read restrictions.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.3 Medium | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N | GitHub_M |
Weaknesses
- CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Affected Products
| Product | Versions |
|---|---|
discoursediscourse |
|
References
- https://github.com/discourse/discourse/security/advisories/GHSA-2wvr-4x7w-v795
- https://github.com/discourse/discourse/pull/20004
- https://github.com/discourse/discourse/pull/20005
- https://github.com/discourse/discourse/commit/105fee978d73b0ec23ff814a09d1c0c9ace95164
- https://github.com/discourse/discourse/commit/ecb9aa5dba94741d9579f4f873f0675f48b4184f
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