CVE-2026-61428High· 7.3▾ TwilightPraisonAI 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 webhoo…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.2 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Aug 1.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.2%
0.2% → 0.4%
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.
Refer to the linked advisories for vendor-supplied fixes and affected version ranges.
Affected packages:
praisonai <= 4.6.77Patched in:
praisonai 4.6.78Connected by shared product, vendor, weakness, or advisory.
GHSA-4mp6-8448-9vgvMedium· 7.3Duplicate Advisory: PraisonAI: AgentMail webhook lacks signature verification, allowing unauthenticated message injection and sender spoofing
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