Description
Discourse is an open-source discussion platform. Prior to version 2.8.13 of the `stable` branch and version 2.9.0.beta14 of the `beta` and `tests-passed` branches, unauthorized users may learn of the existence of hidden tags and that they have been applied to topics that they have access to. This issue is patched in version 2.8.13 of the `stable` branch and version 2.9.0.beta14 of the `beta` and `tests-passed` branches. As a workaround, use the `disable_email` site setting to disable all emails to non-staff users.
References (2)
Core 2
Core References
Patch, Third Party Advisory
https://github.com/discourse/discourse/commit/84c83e8d4a1907f8a2972f0ab44b6402aa910c3b
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-rqvq-94h8-p5wv
Scores
CVSS v3
4.3
EPSS
0.0025
EPSS Percentile
48.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-200
Status
published
Products (2)
discourse/discourse
2.9.0 beta1 (12 CPE variants)
discourse/discourse
< 2.8.13
Published
Nov 29, 2022
Tracked Since
Feb 18, 2026