CVE-2025-58054 Details
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.
A cross-site scripting (XSS) vulnerability has been identified in Discourse Chat, an extension of the Discourse platform. This issue affects versions 3.5.0 and earlier, as well as 3.6.0.beta1-dev in the tests-passed branch. The vulnerability arises when chat channel titles and thread titles are parsed and rendered through the quote message feature while using the rich text editor. Under these conditions, an attacker could inject malicious scripts that are executed in the context of the user's browser.
Users can update to Discourse version 3.5.1 or later, or to version 3.6.0.beta2-dev in the tests-passed branch, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Oct 1, 2025References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-80 | Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| discourse discourse | < 3.5.0 < 3.6.0 3.6.0 beta1 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Oct 23, 2025 | Initial Analysis | [email protected] |
| Oct 1, 2025 | New CVE Received | [email protected] |