Description
discourse-encrypt is a plugin that provides a secure communication channel through Discourse. Improper escaping of encrypted topic titles could lead to a cross site scripting (XSS) issue when a site has content security policy (CSP) headers disabled. Having CSP disabled is a non-default configuration, and having it disabled with discourse-encrypt installed will result in a warning in the Discourse admin dashboard. This has been fixed in commit `9c75810af9` which is included in the latest version of the discourse-encrypt plugin. Users are advised to upgrade. Users unable to upgrade should ensure that CSP headers are enabled and properly configured.
References (3)
Core 3
Core References
Vendor Advisory x_refsource_confirm
https://github.com/discourse/discourse-encrypt/security/advisories/GHSA-5fh6-wp7p-xx7v
Patch x_refsource_misc
https://github.com/discourse/discourse-encrypt/commit/9c75810af9a474d7edaec67dea66f852c0ba1f4e
Product x_refsource_misc
https://developer.mozilla.org/en-US/docs/Web/HTTP/CSP
Scores
CVSS v3
7.2
EPSS
0.0041
EPSS Percentile
61.5%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/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 (1)
discourse/discourse-encrypt
< 2023-09-28
Published
Sep 28, 2023
Tracked Since
Feb 18, 2026