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CVE-2026-47392— PraisonAI vulnerable to sandbox escape via `print.__self__` builtins module leak in `execute_code` (subprocess mode)

CVSS 9.9 · Critical EPSS 0.60% · P45

Affected Version Matrix 2

VendorProductVersion RangeStatus
MervinPraison< 1.6.40praisonaiagentsaffected
MervinPraisonPraisonAI< 4.6.40affected
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I. Basic Information for CVE-2026-47392

Vulnerability Information
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Vulnerability Title
PraisonAI vulnerable to sandbox escape via `print.__self__` builtins module leak in `execute_code` (subprocess mode)
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不完整的黑名单
Source: CVE Program / CVE List V5
Vulnerability Title
Mervin Praison PraisonAI 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Mervin Praison PraisonAI是Mervin Praison个人开发者开源的一个低代码多智能体协作框架。 Mervin Praison PraisonAI 4.6.40之前版本存在安全漏洞，该漏洞源于`execute_code()`函数可被绕过，通过`print.__self__`获取Python `builtins`模块，进而提取`__import__`实现任意操作系统命令执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
MervinPraisonPraisonAI < 4.6.40 -
MervinPraison< 1.6.40 praisonaiagents -

II. Public POCs for CVE-2026-47392

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7822 chars
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III. Intelligence Information for CVE-2026-47392

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Vendor Advisories for CVE-2026-47392 (1)

Same Patch Batch · MervinPraison · 2026-07-21 · 25 CVEs total

CVE-2026-473939.8 CRITICALPraisonAI `deploy --type api` emits a Flask server with authentication disabled by default
CVE-2026-473969.8 CRITICALPraisonAI call server exposes unauthenticated agent listing, invocation, and deletion when
CVE-2026-473919.8 CRITICALPraisonAI's unauthenticated A2A official example can reach real LLM-driven `eval()` tool e
CVE-2026-474109.8 CRITICALpraisonai-platform: JWT signing key defaults to hardcoded "dev-secret-change-me", allowing
CVE-2026-474139.6 CRITICALpraisonai-platform: Any workspace member can add arbitrary user as owner via POST /workspa
CVE-2026-474169.6 CRITICALpraisonai-platform: Any workspace member can promote themselves (or any other member) to o
CVE-2026-474058.8 HIGHPraisonAI Platform missing role checks let any workspace member become owner and take over
CVE-2026-473998.8 HIGHPraisonAI Platform workspace-scoped routes allow cross-workspace object access by global o
CVE-2026-474158.3 HIGHpraisonai-platform: Issue endpoints accept any issue_id without workspace ownership check,
CVE-2026-474198.3 HIGHpraisonai-platform: Agent endpoints accept any agent_id without workspace ownership check,
CVE-2026-474098.1 HIGHpraisonai-platform: Any workspace member can remove any other member (including the owner)
CVE-2026-474178.1 HIGHpraisonai-platform: Comment endpoints accept any issue_id without workspace ownership chec
CVE-2026-474128.1 HIGHpraisonai-platform: Any workspace member can delete the entire workspace via DELETE /works
CVE-2026-474188.1 HIGHpraisonai-platform: Project endpoints accept any project_id without workspace ownership ch
CVE-2026-474068.1 HIGHpraisonai-platform: Dependency endpoints accept any issue_id and dep_id without workspace
CVE-2026-473988.1 HIGHPraisonAI: Arbitrary code execution via unguarded `spec.loader.exec_module` in `agents_gen
CVE-2026-474147.6 HIGHpraisonai-platform: Label endpoints accept any label_id and any issue_id without workspace
CVE-2026-473977.1 HIGHPraisonAI has an Arbitrary File Write in Python API
CVE-2026-474086.5 MEDIUMpraisonai-platform: list_issue_activity returns activity log for any issue regardless of w
CVE-2026-474116.5 MEDIUMpraisonai-platform: Any workspace member can rewrite workspace name, description, and sett

Showing top 20 of 25 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: PraisonAI
Same vendor: MervinPraison
Same weakness: CWE-184

V. Comments for CVE-2026-47392

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