CVE-2025-54136 Information

Aug 03, 2025 cve

Description

Cursor is a code editor built for programming with AI. In versions 1.2.4 and below attackers can achieve remote and persistent code execution by modifying an already trusted MCP configuration file inside a shared GitHub repository or editing the file locally on the target’s machine. Once a collaborator accepts a harmless MCP the attacker can silently swap it for a malicious command (e.g. calc.exe) without triggering any warning or re-prompt. If an attacker has write permissions on a user’s active branches of a source repository that contains existing MCP servers the user has previously approved or allows an attacker has arbitrary file-write locally the attacker can achieve arbitrary code execution. This is fixed in version 1.3.

Reference

https://github.com/cursor/cursor/security/advisories/GHSA-24mc-g4xr-4395

CNNVD-202508-114 (Published: 2025-08-02)

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