Description
Discourse is an open-source platform for community discussion. In Discourse before versions 2.7.8 and 2.8.0.beta5, a user's read state for a topic such as the last read post number and the notification level is exposed.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-gq2h-qhg2-phf9
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/commit/aed65ec16d38886d7be7209d8c02df4ffd4937a4
Scores
CVSS v3
4.3
EPSS
0.0023
EPSS Percentile
45.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Details
CWE
CWE-200
Status
published
Products (2)
discourse/discourse
2.8.0 beta1 (4 CPE variants)
discourse/discourse
< 2.7.8
Published
Aug 13, 2021
Tracked Since
Feb 18, 2026