CVE-2026-61436: Mervinpraison Praisonai

High severity, CVSS 8.6. EPSS: 0.3% chance of exploitation in the next 30 days.

PraisonAI before 4.6.78 fails to verify Svix webhook signatures in AgentMail webhook mode, allowing unauthenticated attackers to forge message.received events. Attackers can send crafted JSON payloads to the webhook endpoint to invoke configured agents with arbitrary sender addresses and message content.

Affected products

• Mervinpraison Praisonai: before 4.6.78 (fixed in 4.6.78)

Published 2026-07-15. Last modified 2026-07-15.