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CVE-2026-47392

CRITICAL Exploitation: PoC
9.9
CVSS 3.1
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.

Metadata

CVE ID
CVE-2026-47392
State
PUBLISHED
Assigner
GitHub_M
Reserved
2026-05-19 19:22 UTC
Published
2026-07-21 15:27 UTC
Last updated
2026-07-21 16:39 UTC
Primary CWE
CWE-184
CWE-184: Incomplete List of Disallowed Inputs
Vendor / Product
MervinPraison / PraisonAI
Sources
cve.org  ·  NVD

Severity & Metrics

9.9 CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
SSVC — CISA Coordinator
Exploitation
PoC
Automatable
no
Tech. Impact
total
Affected products (2)
VendorProductPlatformVersions
MervinPraison < 1.6.40 — praisonaiagents
MervinPraison PraisonAI — < 4.6.40
Weakness (CWE)
CWESourceDescription
CWE-184 cna CWE-184: Incomplete List of Disallowed Inputs
CWE-693 cna CWE-693: Protection Mechanism Failure
CVSS scores (1)
ScoreSeverityVersionSourceVector
9.9 CRITICAL 3.1 cna CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References (3)
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