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

April 1, 2026 (updated April 6, 2026)

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.

References

github.com/MervinPraison/PraisonAI
github.com/MervinPraison/PraisonAI/commit/47bff65413beaa3c21bf633c1fae4e684348368c
github.com/MervinPraison/PraisonAI/security/advisories/GHSA-9gm9-c8mq-vq7m
github.com/advisories/GHSA-9gm9-c8mq-vq7m
nvd.nist.gov/vuln/detail/CVE-2026-34935

Code Behaviors & Features

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