Description
Discourse is an open source platform for community discussion. Prior to version 2.8.4 on the `stable` branch and 2.9.0beta5 on the `beta` and `tests-passed` branches, inviting users on sites that use single sign-on could bypass the `must_approve_users` check and invites by staff are always approved automatically. The issue is patched in Discourse version 2.8.4 on the `stable` branch and version `2.9.0.beta5` on the `beta` and `tests-passed` branches. As a workaround, disable invites or increase `min_trust_level_to_allow_invite` to reduce the attack surface to more trusted users.
References (5)
Core 5
Core References
Third Party Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-x7jh-mx5q-6f9q
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/pull/16974
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/pull/16984
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/commit/0fa0094531efc82d9371f90a02aa804b176d59cf
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/commit/7c4e2d33fa4b922354c177ffc880a2f2701a91f9
Scores
CVSS v3
2.6
EPSS
0.0026
EPSS Percentile
49.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-285
Status
published
Products (2)
discourse/discourse
2.9.0 beta1 (4 CPE variants)
discourse/discourse
< 2.8.4
Published
Jun 07, 2022
Tracked Since
Feb 18, 2026