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PYSEC-2026-3061 Serena: Unauthenticated Flask dashboard on fixed port enables DNS rebinding → memory poisoning → RCE

🗓️ 13 Jul 2026 15:46:29Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Summary Serena's built-in web dashboard exposes an unauthenticated Flask API on a fixed, predictable port (TCP 24282, hardcoded as 0x5EDA in constants.py). The server has no authentication, no CSRF protection, and no Host header validation. A DNS ...

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13 Jul 2026 16:32Current
6.6Medium risk
Vulners AI Score6.6
CVSS 3.18.3
EPSS0.00237
2