Template Injection Vulnerability in PraisonAI Multi-Agent Teams System
CVE-2026-39891

8.8HIGH

Key Information:

Vendor

Mervinpraison

Status
Praisonai
Vendor
CVE Published:
8 April 2026

What is CVE-2026-39891?

The PraisonAI multi-agent teams system is susceptible to a template injection vulnerability in its create_agent_centric_tools() function. Prior to version 4.5.115, user input from the agent.start() process is inadequately handled, allowing malicious templates embedded in user input to be executed rather than treated as plain text. This flaw can lead to unintended execution of code, potentially compromising the integrity and security of the system. It is essential to update to version 4.5.115 or later to mitigate this risk.

Affected Version(s)

PraisonAI < 4.5.115

References

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

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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