CVE-2021-43792 Information

Description

Discourse is an open source discussion platform. In affected versions a vulnerability affects users of tag groups who use the \Tags are visible only to the following groups\ feature. A tag group may only allow a certain group (e.g. staff) to view certain tags. Users who were tracking or watching the tags via /preferences/tags then have their staff status revoked will still see notifications related to the tag but will not see the tag on each topic. This issue has been patched in stable version 2.7.11. Users are advised to upgrade as soon as possible.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Reference

https://github.com/discourse/discourse/commit/cdaf7f4bb3ec268238e4c29a14bb73fad56574b4 https://github.com/discourse/discourse/security/advisories/GHSA-pq2x-vq37-8522 https://meta.discourse.org/t/non-forum-staff-getting-notifications-for-staff-only-tags/184895

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

NONE

Base Severity

4.3