Discourse AI Suggestion Endpoint Vulnerability in Open-Source Community Platform
CVE-2025-58055

4.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
1 October 2025

What is CVE-2025-58055?

In the Discourse community discussion platform, versions 3.5.0 and earlier contain a vulnerability in their AI suggestion endpoints. This issue allows authenticated users to manipulate API requests, specifically by altering the 'topic_id' parameter. As a result, users can access sensitive information about topics beyond their authorization level. The AI model responses may inadvertently reveal details about restricted topics, posing a significant risk to data privacy. Discourse has released a patch in version 3.5.1 and recommends users adjust group access settings to mitigate this vulnerability.

Affected Version(s)

discourse < 3.5.1

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM
https://github.com/discourse/discourse/commit/28d569cae9b...
x_refsource_MISC

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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