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[ CVE-2026-61428 · Published 11 Jul 2026 ]

PraisonAI: AgentMail webhook lacks signature verification, allowing unauthenticated message injection and sender spoofing

CVSS 7.3 EPSS <1%Fix available

[ Why it matters ]Priority signals

  • Public proof-of-concept exploit exists (CISA SSVC)

[ Description ]Official description

PraisonAI AgentMail versions before 4.6.78 lack signature verification in webhook mode, allowing unauthenticated attackers to inject messages with spoofed sender addresses. Attackers can POST crafted message.received events to the webhook endpoint to inject arbitrary content into the agent and trigger replies to attacker-controlled addresses, bypassing sender allow/block lists.

[ Fixes ]Fixes and patches

  • praisonai 4.6.78Fixed version · GitHub Advisories · pip package praisonai: upgrade to 4.6.78 or later (affected <= 4.6.77)

[ Packages ]Affected open-source packages

[ References ]References