CVE-2026-73218 Cursor: Sandbox escape via launching privileged containers
Attackers can escape the sandbox to execute host commands and access user files by launching privileged containers if Docker tools are installed.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-73218?
CVE-2026-73218 is a high-severity vulnerability in cursor, published on 11 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-73218?
How do I fix CVE-2026-73218?
No fix has been published for CVE-2026-73218 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-73218 being exploited?
There is no known exploitation of CVE-2026-73218 in the wild and no public exploit code.