Vulnerability · Published Aug 11, 2026 · Assigned by GitHub_M

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

High 7.7

In plain English

A high-severity security flaw in cursor from cursor. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 4.0)7.7High

Exploit odds (30 days)0.4%top 62.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
cursor	cursor	< 3.1.2

Weakness: CWE-693 · Vector: 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

References

https://github.com/cursor/cursor/security/advisories/GHSA-p9g2-cr55-cw9c x_refsource_CONFIRM