Description
Discourse is an open-source discussion platform. Prior to version 3.0.1 on the `stable` branch and 3.1.0.beta2 on the `beta` and `tests-passed` branches, when submitting a membership request, there is no character limit for the reason provided with the request. This could potentially allow a user to flood the database with a large amount of data. However it is unlikely this could be used as part of a DoS attack, as the paths reading back the reasons are only available to administrators. Starting in version 3.0.1 on the `stable` branch and 3.1.0.beta2 on the `beta` and `tests-passed` branches, a limit of 280 characters has been introduced for membership requests.
References (4)
Core 4
Core References
Patch, Third Party Advisory
https://github.com/discourse/discourse/commit/3e0cc4a5d9ef44ad902f6985d046ebb32f0a14ee
Patch, Third Party Advisory
https://github.com/discourse/discourse/commit/d5745d34c20c31a221039d8913f33064433003ea
Patch, Third Party Advisory
https://github.com/discourse/discourse/pull/19993
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-6xff-p329-9pgf
Scores
CVSS v3
3.5
EPSS
0.0034
EPSS Percentile
56.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (5)
discourse/discourse
1.1.0 beta1 (9 CPE variants)
discourse/discourse
1.2.0 beta1 (9 CPE variants)
discourse/discourse
1.3.0 beta1 (11 CPE variants)
discourse/discourse
1.4.0 beta1 (12 CPE variants)
discourse/discourse
1.5.0 beta1 (9 CPE variants)
Published
Jan 28, 2023
Tracked Since
Feb 18, 2026