Vulnerability Description
PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `execute_code()` in `praisonaiagents/tools/python_tools.py` (v1.6.37, subprocess sandbox mode) can be fully bypassed using `print.__self__` to retrieve the real Python `builtins` module, from which `__import__` can be extracted via `vars()` and runtime string construction. This achieves arbitrary OS command execution on the host, completely defeating the sandbox. This is a novel bypass that survives all patches for CVE-2026-39888 (frame traversal), CVE-2026-34938 (str subclass), and CVE-2026-40158 (`type.__getattribute__` trampoline). PraisonAI version 4.6.40 and praisonaiagents version 1.6.40 contain an updated fix.
CVSS Score
CRITICAL
Related Weaknesses (CWE)
References
- https://github.com/MervinPraison/PraisonAI/commit/b0d8f777528f3253a0cfb0a3ef6545
- https://github.com/MervinPraison/PraisonAI/pull/1684
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4mr5-g6f9-cf
- https://github.com/MervinPraison/PraisonAI/security/advisories/GHSA-4mr5-g6f9-cf
FAQ
What is CVE-2026-47392?
CVE-2026-47392 is a vulnerability with a CVSS score of 9.9 (CRITICAL). PraisonAI is a multi-agent teams system. Prior to version 4.6.40 of PraisonAI, corresponding to version 1.6.40 of praisonaiagents, `execute_code()` in `praisonaiagents/tools/python_tools.py` (v1.6.37,...
How severe is CVE-2026-47392?
CVE-2026-47392 has been rated CRITICAL with a CVSS base score of 9.9/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2026-47392?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.