Unauthorized Access in Discourse Discussion Platform
CVE-2025-68666

5.9MEDIUM

Key Information:

Vendor

Discourse
Status
Discourse
Vendor
CVE Published:
28 January 2026

What is CVE-2025-68666?

In the Discourse discussion platform, prior versions inadvertently allow users with moderation privileges to access user archives, exposing private topics and posts that should remain confidential. This vulnerability affects all versions before 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. To mitigate the risk, site administrators can temporarily revoke moderation roles until the upgrade to a patched version is implemented.

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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:
5.9
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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