CVE-2026-34935
Received Received - Intake
Command Injection in PraisonAI CLI Allows Arbitrary Code Execution

Publication date: 2026-04-03

Last updated on: 2026-04-14

Assigner: GitHub, Inc.

Description
PraisonAI is a multi-agent teams system. From version 4.5.15 to before version 4.5.69, the --mcp CLI argument is passed directly to shlex.split() and forwarded through the call chain to anyio.open_process() with no validation, allowlist check, or sanitization at any hop, allowing arbitrary OS command execution as the process user. This issue has been patched in version 4.5.69.
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Meta Information
Published
2026-04-03
Last Modified
2026-04-14
Generated
2026-06-16
AI Q&A
2026-04-04
EPSS Evaluated
2026-06-15
NVD
CVE-2026-34935
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
praison praisonai From 4.5.15 (inc) to 4.5.69 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-78 The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.
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Executive Summary

This vulnerability exists in PraisonAI, a multi-agent teams system, specifically in versions from 4.5.15 up to but not including 4.5.69. The issue arises because the --mcp command line argument is passed directly to the shlex.split() function and then forwarded to anyio.open_process() without any validation, allowlist checks, or sanitization. This lack of input validation allows an attacker to execute arbitrary operating system commands with the privileges of the process user.

Impact Analysis

The vulnerability can have severe impacts because it allows an attacker to execute arbitrary OS commands on the affected system with the same privileges as the process user running PraisonAI. This can lead to full system compromise, including unauthorized data access, data modification, service disruption, or further exploitation of the system.

Mitigation Strategies

The vulnerability in PraisonAI versions from 4.5.15 to before 4.5.69 allows arbitrary OS command execution due to unsafe handling of the --mcp CLI argument.

To mitigate this vulnerability immediately, upgrade PraisonAI to version 4.5.69 or later where the issue has been patched.

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