Description
Discourse is an option source discussion platform. Prior to version 2.8.14 on the `stable` branch and version 3.0.0.beta16 on the `beta` and `tests-passed` branches, tag descriptions, which can be updated by moderators, can be used for cross-site scripting attacks. This vulnerability can lead to a full XSS on sites which have modified or disabled Discourse’s default Content Security Policy. Versions 2.8.14 and 3.0.0.beta16 contain a patch.
References (2)
Core 2
Core References
Third Party Advisory x_refsource_confirm
https://github.com/discourse/discourse/security/advisories/GHSA-5rq6-466r-6mr9
Patch, Third Party Advisory x_refsource_misc
https://github.com/discourse/discourse/commit/692329896ac64d8581947e977202c243eef3b5a2
Scores
CVSS v3
6.8
EPSS
0.0046
EPSS Percentile
63.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
total
Details
CWE
CWE-79
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 05, 2023
Tracked Since
Feb 18, 2026