CVE-2026-34935 CRITICAL

CVE-2026-34935: PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()

Vendor Mervinpraison
Product PraisonAI
Weakness CWE-78
Published April 3, 2026
Last update April 6, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

April 3, 2026 CVE published
April 6, 2026 Record updated