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.
{
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47392.json",
"cna_assigner": "GitHub_M",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "praisonaiagents"
},
{
"last_affected": "praisonaiagents"
}
],
"source": "AFFECTED_FIELD"
}
],
"cwe_ids": [
"CWE-184",
"CWE-693"
]
}