Hacker News: Cursor uploads .env file with secrets despite .gitignore and .cursorignore

Source URL: https://forum.cursor.com/t/env-file-question/60165
Source: Hacker News
Title: Cursor uploads .env file with secrets despite .gitignore and .cursorignore

Feedly Summary: Comments

AI Summary and Description: Yes

Summary: The text discusses a significant vulnerability in the Cursor tool, where sensitive development secrets could be leaked due to improper handling of .env files. The author’s experience highlights the critical need for security measures in AI coding tools, especially in enterprise environments. This case raises practical implications for professionals concerned with software security and the management of confidential information.

Detailed Description:
The text describes a potential security issue experienced by the author while using the Cursor tool, particularly in the context of software development. The incident revolves around the unexpected leakage of sensitive development secrets stored in .env files, which are commonly used to manage configuration settings for applications.

Key points highlighted in the text include:

– **Detection of the Issue**: The author noticed that Cursor autocompletes credentials contained in .env files, indicating that the tool may improperly handle sensitive data.

– **Past Trust**: The author previously trusted the tool, having checked its configuration before using it. However, subsequent versions introduced vulnerabilities that put sensitive data at risk.

– **Steps Taken to Reproduce the Issue**: The author outlines specific steps to reproduce the observed behavior, emphasizing that despite having multiple layers of supposed protection (such as .cursorignore and .gitignore files), the secrets were still exposed.

– **Concerns Over Clipboard Use**: The author speculates whether Cursor monitors clipboard history, which would add a layer of concern about information security.

– **Impact on Trust and Usage**: The experience led the author to question the viability of using Cursor in enterprise settings and to revert to using alternative tools like VSCode for code editing, which indicates a loss of trust in the platform.

– **Call for Systematic Safeguards**: The author expresses a need for proper safeguards in AI coding tools to prevent similar security breaches, especially in enterprise environments that handle sensitive information.

– **Updates and Documentation**: Throughout the text, updates and version details of the tool are provided, highlighting ongoing changes and the author’s commitment to document the issue.

The text serves as a crucial reminder for software developers and security professionals about the potential vulnerabilities that can arise with AI tools and the importance of robust security mechanisms. It raises awareness on the need for thorough testing and documentation to ensure that sensitive user data is not inadvertently exposed.

Professionals in the field should take note of these types of issues when assessing third-party tools for their development environments. Considerations for training developers about security best practices when using automated coding environments and tools like Cursor are essential to mitigate risks associated with credential leaks.