Description
Discourse is an open source discussion platform. In versions prior to 2.8.9 on the `stable` branch and prior to 2.9.0.beta10 on the `beta` and `tests-passed` branches, a malicious actor can add large payloads of text into the Location and Website fields of a user profile, which causes issues for other users when loading that profile. A fix to limit the length of user input for these fields is included in version 2.8.9 on the `stable` branch and version 2.9.0.beta10 on the `beta` and `tests-passed` branches. There are no known workarounds.
References (3)
Core 3
Core References
Third Party Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-jw3q-xg5g-qjrw
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/pull/18302
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/commit/e69f7d2fd9c977dedbdb17f6813651e2a45bfb71
Scores
CVSS v3
4.3
EPSS
0.0053
EPSS Percentile
67.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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 (9 CPE variants)
discourse/discourse
< 2.8.9
Published
Sep 29, 2022
Tracked Since
Feb 18, 2026