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BIT-DISCOURSE-2025-66488 Discourse allows script execution in uploaded HTML/XML files on S3

🗓️ 02 Feb 2026 08:42:08Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Discourse prior to 3.5.4 allows scripts in S3 uploads; upgrade to fixed versions or block html/xml uploads.

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02 Feb 2026 09:25Current
5.3Medium risk
Vulners AI Score5.3
CVSS 3.14.6 - 6.1
EPSS0.00174
SSVC
2