CVE-2026-61436 PUBLISHED

PraisonAI before 4.6.78 Missing Webhook Signature Verification

Assigner: VulnCheck
Reserved: 09.07.2026 Published: 15.07.2026 Updated: 15.07.2026

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.

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
CVSS Score: 8.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	Low	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	Low	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L
CVSS Score: 8.6

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	MervinPraison
Product	PraisonAI
Versions	Default: unaffected affected from 0 to 4.6.78 (excl.) Version 4.6.78 is unaffected

CVE-2026-61436 PUBLISHED

PraisonAI before 4.6.78 Missing Webhook Signature Verification

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Product Status

Credits

References

Problem Types