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CVE-2026-73217— Cursor: Sandbox escape via tampered Python virtual environments

Quick assessment

Affected
cursor cursor
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cursor是Cursor公司的一款深度集成AI的智能代码编辑器。 Cursor 3.1.2之前版本存在处理逻辑错误漏洞，该漏洞源于Auto-Run Sandbox模式下的代理可替换虚拟环境的Python可执行文件为恶意包装器，可能导致以用户权限执行任意主机命令，包括修改工作区外文件和启动应用程序。

CVSS 7.7 · High EPSS 0.31% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
cursor cursor < 3.1.2 affected
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I. Basic Information for CVE-2026-73217

Vulnerability Information
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Vulnerability Title
Cursor: Sandbox escape via tampered Python virtual environments
Source: CVE Program / CVE List V5
Vulnerability Description
Cursor is a code editor built for programming with AI. Prior to 3.1.2, Cursor IDE for macOS allows an agent running in Auto-Run Sandbox mode to replace a virtual environment's Python executable with a malicious wrapper that the Microsoft Python extension invokes outside the sandbox, allowing arbitrary host commands with the user's privileges, including modifying files outside the workspace and launching applications. This issue is fixed in version 3.1.2.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
保护机制失效
Source: CVE Program / CVE List V5
Vulnerability Title
Cursor 处理逻辑错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cursor是Cursor公司的一款深度集成AI的智能代码编辑器。 Cursor 3.1.2之前版本存在处理逻辑错误漏洞，该漏洞源于Auto-Run Sandbox模式下的代理可替换虚拟环境的Python可执行文件为恶意包装器，可能导致以用户权限执行任意主机命令，包括修改工作区外文件和启动应用程序。
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

Vendor Product Affected Versions CPE Subscribe
cursor cursor < 3.1.2 -

II. Public POCs for CVE-2026-73217

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6244 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-73217

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Vendor Advisories for CVE-2026-73217 (1)

IV. Related Vulnerabilities

Same product: cursor
Same vendor: cursor
Same weakness: CWE-693

V. Comments for CVE-2026-73217

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