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CVE-2026-28227 Discourse Vulnerable to Unauthorized Topic Creation in Staff-Only Categories via Topic Timer publish_to_category

🗓️ 26 Feb 2026 21:27:38Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 5 Views

CVE-2026-28227: Discourse TL4 users can publish topics to staff-only categories via the publish_to_category timer; patched in 2025.12.2.

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10 Apr 2026 05:41Current
5.9Medium risk
Vulners AI Score5.9
CVSS 45.1
EPSS0.0018
5