CVE-2025-58054CWE-80

CVE-2025-58054

Low · published October 1, 2025

CVSS v3.1
3.5
EPSS
0%
Percentile
10.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
3.5 · LOW
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00208 · 10.3th percentile
Weakness
CWE-80 · Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)
Published
2025-10-01T23:15Z
Affected products (3)
ProductVersionsFixed in
discourse/discourse< 3.5.03.5.0
discourse/discourse< 3.6.03.6.0
discourse/discourseall versions—
References (2)
https://github.com/discourse/discourse/commit/3a224fd546d894ee408e7414b6879e814a792f91 · [email protected]https://github.com/discourse/discourse/security/advisories/GHSA-7p47-8m82-m2vf · [email protected]
EPSS history
Timeline
  • 01 OCT 18:42Z
    Discourse is vulnerable to XSS when quoting chat messages
    cvelistv5