CVE-2025-68666 - CVE House
Back to Database
Status published Medium CVE-2025-68666

Discourse users archives leaked to users with moderation privileges

Vulnerability Description

Discourse is an open source discussion platform. In versions prior to 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0, users archives are viewable by users with moderation privileges even though moderators should not have access to the archives. Private topic/post content made by the users are leaked through the archives leading to a breach of confidentiality. This issue is patched in versions 3.5.4, 2025.11.2, 2025.12.1, and 2026.1.0. To work around this problem, a site admin can temporarily revoke the moderation role from all moderators until the Discourse instance has been upgraded to a version that has been patched.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2025-68666

Credits & Attribution

No credits recorded in the NVD database.

References

More from discourse

View All →
CVE-2025-69289
Discourse has insecure default configuration that allows non-admin moderators to takeover any non-staff account via email change
Medium 5.1
CVE-2025-69218
Discourse moderators can access admin-only reports exposing private upload URLs
High 7.1
CVE-2025-68934
Discourse Has Denial of Service (DoS) Vulnerability in Drafts Creation Endpoint
Medium 6.5
CVE-2025-68933
Discourse non-admin moderators can exfiltrate private content via post ownership transfer
Medium 6.9
CVE-2025-68662
FinalDestination hostname matching allows SSRF protection bypass
High 7.6

Affected Vendor

Affected Software

discourse
Vulnerable Versions:
< 3.5.4, >= 2025.11.0-latest, < 2025.11.2, >= 2025.12.0-latest, < 2025.12.1, >= 2026.1.0-latest, < 2026.1.0

Timeline

Official Publish: January 28th, 2026
Last Modified: February 26th, 2026
Added to House: July 22nd, 2026

CVSS Vectors

Weaknesses (CWE)

CWE-863

MITRE ATT&CK TTPs

T1190 Exploit Public-Facing Application
Initial Access
T1078 Valid Accounts
Persistence
T1548 Abuse Elevation Control Mechanism
Privilege Escalation
T1021 Remote Services
Lateral Movement
T1098 Account Manipulation
Defense Evasion