Description
Discourse is an open source discussion platform. Prior to 3.2.3 and 3.3.0.beta3, improperly sanitized Onebox data could lead to an XSS vulnerability in some situations. This vulnerability only affects Discourse instances which have disabled the default Content Security Policy. This vulnerability is fixed in 3.2.3 and 3.3.0.beta3.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-cx83-5p6x-9qh9
Patch x_refsource_misc
https://github.com/discourse/discourse/commit/26aef0c288839378b9de5819e96eac8cf4ea60fd
Scores
CVSS v3
6.3
EPSS
0.0099
EPSS Percentile
77.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (2)
discourse/discourse
3.3.0 beta1 (2 CPE variants)
discourse/discourse
< 3.2.3
Published
Jul 30, 2024
Tracked Since
Feb 18, 2026