Vulnerability in PraisonAI Multi-Agent System Exposes Event Streaming Without Authentication
CVE-2026-57146

7.5HIGH

Key Information:

Vendor

Mervinpraison

Status
Praisonai
Vendor
CVE Published:
23 October 2026

What is CVE-2026-57146?

A significant vulnerability exists in the PraisonAI multi-agent system that allows unauthenticated access to A2U event streaming. This issue affects versions 4.5.115 to just before 4.6.61. The vulnerability arises from the failure to implement adequate authentication for the A2U subscription and event routes when the CLI entrypoint is initiated. The current command-line interface does not utilize an API key or corresponding middleware, enabling unauthorized users to access sensitive event streams. The vulnerability has been addressed in version 4.6.61, which includes necessary authentication mechanisms.

Affected Version(s)

PraisonAI >= 4.5.115, < 4.6.61

References

https://github.com/MervinPraison/PraisonAI/security/advis...
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CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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