High severity · published Nov 4, 2025
CVE-2025-64109
Cursor CLI Beta: Command Injection via Untrusted MCP Configuration
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
Cursor is a code editor built for programming with AI. In versions and below, a vulnerability in the Cursor CLI Beta allowed an attacker to achieve remote code execution through the MCP (Model Context Protocol) server mechanism by uploading a malicious MCP configuration in .cursor/mcp.json file in a GitHub repository. Once a victim clones the project and opens it using Cursor CLI, the command to run the malicious MCP server is immediately executed without any warning, leading to potential code execution as soon as the command runs. This issue is fixed in version 2025.09.17-25b418f.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 44% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CU
cursor · cursor
< 2025.09.17-25b418f · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-64109
CVE.org
https://www.cve.org/CVERecord?id=CVE-2025-64109
github.com
https://github.com/cursor/cursor/security/advisories/GHSA-4hwr-97q3-37w2
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