CVE-2026-73217
HighCVSS 7.7Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
Cursor IDE for macOS before version 3.1.2 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.
Risk Assessment
The attack can lead to full compromise of the user's system, including modification of files outside the workspace and launching malicious applications, posing a serious threat to data confidentiality and integrity.
Recommendation
Update Cursor IDE to version 3.1.2 or later and avoid using Auto-Run Sandbox mode with untrusted agents.
Other vulnerabilities in Cursor
See all- CVE-2026-73218High
Cursor IDE for macOS before version 3.0.0 allows an agent running in Auto-Run Sandbox mode, when Docker Desktop and Dev Containers CLI are installed, to launch a privileged container and mount Docker's virtiofs0, granting read/write access to the user's home directory and enabling host command execution with the user's privileges without an additional permission prompt.
- CVE-2026-63093High
A binary planting vulnerability in Cursor for Windows version 3.2.16 allows remote attackers to achieve arbitrary code execution by placing a malicious git.exe in the repository root. When a developer clones and opens a crafted repository, Cursor automatically executes the malicious binary without user interaction.
- CVE-2026-61613High
A vulnerability in Cursor editor before 03/31/2026 allowed attacker-controlled web content to connect to an unauthenticated local agent endpoint, enabling code execution in the cloud agent sandbox and access to files, repositories, environment variables, credentials, and GitHub App tokens. The issue was fixed on 03/31/2026 by requiring authentication for the relevant endpoint.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS