Description
Discourse is an open-source discussion platform. Prior to version 2.9.0.beta13, users can post chat messages of an unlimited length, which can cause a denial of service for other users when posting huge amounts of text. Users should upgrade to version 2.9.0.beta13, where a limit has been introduced. No known workarounds are available.
References (2)
Core 2
Core References
Patch, Third Party Advisory
https://github.com/discourse/discourse/commit/3de765c89524a526ce611e11468d758a471a933f
Third Party Advisory
https://github.com/discourse/discourse/security/advisories/GHSA-mfh7-6cv6-qccc
Scores
CVSS v3
3.5
EPSS
0.0030
EPSS Percentile
53.1%
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-770
CWE-20
Status
published
Products (2)
discourse/discourse
2.9.0 beta1 (12 CPE variants)
discourse/discourse
< 2.9.0
Published
Nov 28, 2022
Tracked Since
Feb 18, 2026