CVE-2026-73217
Received Received - Intake

Cursor IDE macOS Auto-Run Sandbox Python Executable Replacement

Publication date: 2026-08-11

Last updated on: 2026-08-11

Assigner: GitHub, Inc.

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.

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Meta Information

Published
2026-08-11
Last Modified
2026-08-11
Generated
2026-08-11
AI Q&A
2026-08-11
EPSS Evaluated
N/A
NVD
CVE-2026-73217
EUVD
EUVD-2026-56838

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
cursor cursor_id_e 3.1.2
cursor cursor_ide to 3.1.2 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

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Executive Summary

CVE-2026-73217 is a high-severity vulnerability in Cursor IDE for macOS versions before 3.1.2. An agent in Auto-Run Sandbox mode can replace a Python virtual environment's executable with a malicious wrapper. When the Microsoft Python extension calls this interpreter outside the sandbox, the wrapper executes arbitrary host commands with the user's privileges.

Impact Analysis

This vulnerability allows attackers to run arbitrary commands on your system with your privileges. They could modify files outside your workspace or launch applications, potentially leading to data theft, system compromise, or further malware installation.

Mitigation Strategies

Update Cursor IDE to version 3.1.2 or later to patch the vulnerability. Remove any untrusted agents or scripts running in Auto-Run Sandbox mode. Review system files for unauthorized modifications and monitor for suspicious activity.

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