Description
Discourse is an open source discussion platform. Under certain conditions, a logged in user can redeem an invite with an email that either doesn't match the invite's email or does not adhere to the email domain restriction of an invite link. The impact of this flaw is aggravated when the invite has been configured to add the user that accepts the invite into restricted groups. Once a user has been incorrectly added to a restricted group, the user may then be able to view content which that are restricted to the respective group. Users are advised to upgrade to the current stable releases. There are no known workarounds to this issue.
Scores
CVSS v3
5.7
EPSS
0.0027
EPSS Percentile
50.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-281
Status
published
Products (2)
discourse/discourse
2.9.0 beta1 (5 CPE variants)
discourse/discourse
< 2.8.4
Published
Jun 27, 2022
Tracked Since
Feb 18, 2026