Cursor up to 1.2 Model Context Protocol os command injection

Summaryinfo

A vulnerability labeled as critical has been found in Cursor up to 1.2. This impacts an unknown function of the component Model Context Protocol. Executing a manipulation can lead to os command injection. This vulnerability is registered as CVE-2025-54133. It is possible to launch the attack remotely. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Cursor up to 1.2. It has been declared as critical. This vulnerability affects an unknown part of the component Model Context Protocol. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is shared for download at github.com. This vulnerability was named CVE-2025-54133 since 07/17/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1202.

Upgrading to version 1.3 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-23406). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Cursor

Version

• 1.0
• 1.1
• 1.2

Website

• Product: https://github.com/cursor/cursor/

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Once again VulDB remains the best source for vulnerability data.

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