CVE-2025-58054
Discourse is vulnerable to XSS when quoting chat messages
5.4
MEDIUM
CVSS 3.1
EPSS 0.04%
Description
Discourse is an open-source community discussion platform. Versions 3.5.0 and below are vulnerable to XSS attacks through parsing and rendering of chat channel titles and chat thread titles via the quote message functionality when using the rich text editor. This issue is fixed in version 3.5.1.
How to fix CVE-2025-58054
To remediate CVE-2025-58054, upgrade the affected package to a fixed version below.
- —upgrade to 3.5.1 or later
Is CVE-2025-58054 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.5.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N |