RCE in Anysphere Cursor
CVE-2025-54133
Cursor is a code editor built for programming with AI. In versions 1.17 through 1.2, there is a UI information disclosure vulnerability in Cursor's MCP (Model Context Protocol) deeplink handler, allowing attackers to execute 2-click arbitrary system commands through social engineering attacks. When users click malicious `cursor://anysphere.cursor-deeplink/mcp/install` links, the installation dialog does not show the arguments being passed to the command being run. If a user clicks a malicious deeplink, then examines the installation dialog and clicks through, the full command including the arguments will be executed on the machine. This is fixed in version 1.3.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.004 (29.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.
Affected products
- Anysphere Cursor
- Cursor — versions >= 1.17, < 1.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-54133?
- CVE-2025-54133 is a critical-severity vulnerability in Anysphere Cursor, classified under OS Command Injection. CVSS score: 9.6/10. Published 2025-08-02.
- How severe is CVE-2025-54133?
- Critical severity. CVSS v3 base score is 9.6 out of 10.