Access Control Bypass Vulnerability in Discourse by Discourse Team
CVE-2025-68660

5.3MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
28 January 2026

What is CVE-2025-68660?

An access control bypass vulnerability exists in Discourse, an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, an endpoint allows authenticated users to circumvent ai_discover_persona access controls, facilitating unauthorized access to personas tied to staff-only categories, RAG document sets, or automated tools. This flaw could enable attackers to impersonate other users, leading to unwanted AI interactions that may generate confusing or abusive private message traffic. Patches are available in the specified versions, and no known workarounds exist.

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Deploy the Patch

Affected Version(s)

discourse < 3.5.4 < 3.5.4

discourse >= 2025.11.0-latest, < 2025.11.2 < 2025.11.0-latest, 2025.11.2

discourse >= 2025.12.0-latest, < 2025.12.1 < 2025.12.0-latest, 2025.12.1

References

https://github.com/discourse/discourse/security/advisorie...
x_refsource_CONFIRM

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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