CVE-2026-61428Public exploitNetwork attack vector

Unauthenticated message injection via unsigned webhooks

Published Jul 11, 2026 · Updated Jul 11, 2026

Authentication bypass in PraisonAI AgentMail before 4.6.78 allows remote attackers to inject spoofed messages through its webhook. The AgentMail webhook handler parses unsigned message.received JSON and passes its sender and content directly to the agent session and reply path. Exposure requires webhook or hybrid mode; a reachable peer can bypass sender lists, control agent input, and direct replies to an attacker-chosen address.

CVSS severity6.9
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in PraisonAI AgentMail before 4.6.78 allows remote attackers to inject spoofed messages through its webhook. The AgentMail webhook handler parses unsigned message.received JSON and passes its sender and content directly to the agent session and reply path. Exposure requires webhook or hybrid mode; a reachable peer can bypass sender lists, control agent input, and direct replies to an attacker-chosen address.

The record

CVE
CVE-2026-61428
Published
Jul 11, 2026
Updated
Jul 11, 2026
Vendor
Mervin Praison
Product
PraisonAI
Classifications
CWE-862, CWE-290, CWE-345, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <4.6.78

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mervin Praison · PraisonAIversion=0 <4.6.78

Published CVSS scores

6.9VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
7.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-290Authentication Bypass by Spoofing
CWE-345Insufficient Verification of Data Authenticity
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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