CVE-2025-58054

Published: Oct 1, 2025Modified: Jun 17, 2026

5.4

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.5

Source: NVD

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.

Affected (3)

Products: Discourse: Discourse

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Discourse Discourse	Before 3.6.0
Discourse Discourse	Before 3.5.0
Discourse Discourse	Version 3.6.0 beta1

Related CWEs

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages.

References (2)

https://github.com/discourse/discourse/commit/3a224fd546d894ee408e7414b6879e814a792f91

Source: security-advisories@github.com

Patch

https://github.com/discourse/discourse/security/advisories/GHSA-7p47-8m82-m2vf

Source: security-advisories@github.com

Vendor Advisory

Timeline

No history available yet.