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BIT-DISCOURSE-2025-68659 Discourse has DoS vulnerability in username change endpoint

🗓️ 02 Feb 2026 08:42:14Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 4 Views

Discourse versions before 3.5.4 and 2025.11.2/12.1/2026.1.0 have a DoS in the username change endpoint.

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02 Feb 2026 09:25Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.14.3 - 5.3
EPSS0.00219
SSVC
4