Cross-Site Scripting Vulnerability in Discourse Community Platform
CVE-2025-58054

3.5LOW

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
1 October 2025

What is CVE-2025-58054?

Discourse, an open-source community discussion platform, is affected by a Cross-Site Scripting (XSS) vulnerability. This security flaw allows attackers to execute arbitrary scripts by manipulating chat channel and thread titles through the quote message functionality when using the rich text editor. Users are strongly advised to update to version 3.5.1 or later, which addresses this security issue effectively.

Affected Version(s)

discourse < 3.5.1

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/3a224fd546d...
x_refsource_MISC

CVSS V3.1

Score:
3.5
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

JSON
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CVE-2025-58054 : Cross-Site Scripting Vulnerability in Discourse Community Platform