OAuth Vulnerability in PraisonAI Multi-Agent Teams System
CVE-2026-34953

9.1CRITICAL

Key Information:

Vendor

Mervinpraison

Status
Praisonai
Vendor
CVE Published:
3 April 2026

What is CVE-2026-34953?

PraisonAI, a multi-agent teams system, contains an authentication flaw where the OAuthManager.validate_token() function erroneously returns True for any token not found in its internal store, which is empty by default. As a result, any HTTP request to the MCP server with an arbitrary Bearer token is authenticated, granting unauthorized access to all registered tools and agent capabilities. This flaw has been resolved in version 4.5.97, highlighting the importance of token validation in securing multi-agent systems.

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Affected Version(s)

PraisonAI < 4.5.97

References

https://github.com/MervinPraison/PraisonAI/security/advis...
x_refsource_CONFIRM

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
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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