CVE-2025-58054
BaseFortify
Publication date: 2025-10-01
Last updated on: 2025-10-23
Assigner: GitHub, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| discourse | discourse | to 3.5.0 (exc) |
| discourse | discourse | to 3.6.0 (exc) |
| discourse | discourse | 3.6.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-80 | 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability affects Discourse versions 3.5.0 and below, allowing cross-site scripting (XSS) attacks through the parsing and rendering of chat channel titles and chat thread titles when using the quote message functionality with the rich text editor. It means that an attacker could inject malicious scripts into these titles, which would then be executed in the context of other users viewing them. The issue is fixed in version 3.5.1.
How can this vulnerability impact me? :
The vulnerability can lead to cross-site scripting attacks, which may allow attackers to execute malicious scripts in the browsers of users interacting with the affected chat titles. This could result in unauthorized actions performed on behalf of users, theft of session tokens, or other malicious activities. However, the CVSS score indicates a low severity with limited impact on confidentiality and no impact on integrity or availability.
What immediate steps should I take to mitigate this vulnerability?
Upgrade Discourse to version 3.5.1 or later, as this version contains the fix for the XSS vulnerability related to chat channel and thread titles when using the rich text editor.