← Retour au blog
tech 1 June 2026

ChatGPT for Google Sheets Vulnerabilities: Data Exfiltration and Phishing

The ChatGPT extension for Google Sheets, despite its popularity, unveils critical security flaws, including data exfiltration and phishing attacks. Let's break down these vulnerabilities and the steps taken to counter them.

Introduction

With over 185,000 downloads in less than a month, the ChatGPT extension for Google Sheets has quickly captivated users. However, this popularity has also highlighted critical security vulnerabilities, including data exfiltration and phishing attacks. These flaws raise major concerns for users who rely on these tools to manage sensitive information.

Understanding the Vulnerabilities

Data Exfiltration

Data exfiltration involves the unauthorized transfer of information from a user's system to an external source. In the case of ChatGPT for Google Sheets, this can occur through an indirect command injection. A benign user query can be exploited to extract data from multiple workbooks across the victim's account without requiring human approval.

Phishing Attacks

Phishing attacks aim to deceive users into divulging sensitive information, often through fake interfaces that mimic legitimate sites or applications. With ChatGPT integrated into Google Sheets, an attacker can present interactive phishing pop-ups that appear authentic, thereby increasing the risk of credential or personal data theft.

OpenAI's Response

In response to these findings, OpenAI has taken immediate action. They have disabled the model's ability to generate Apps Script code, thereby reducing the risk of exploitation through prompt injection. Additionally, OpenAI is re-evaluating its sandboxing approach to bolster security against such attacks.

What Solutions for Users?

For users who wish to continue using ChatGPT for Google Sheets safely, it is recommended to:

  1. Verify Data Sources: Ensure all imported data comes from reliable sources.
  2. Regularly Update: Always use the latest version of the extension to benefit from the latest security patches.
  3. Threat Awareness: Train users to recognize signs of phishing and other suspicious activities.

Conclusion

The vulnerabilities of ChatGPT for Google Sheets underscore the importance of increased security vigilance, especially with the growing integration of AI in our everyday tools. While OpenAI has taken steps to address these flaws, users must remain proactive in protecting their data. Let's discuss your project in 15 minutes.

ChatGPT Google Sheets Data Exfiltration Phishing Security
Deepthix newsletter · 100% AI · every Monday 8am

An AI agent reads tech for you.

Our AI agent scans ~200 sources per week and ships the best articles to your inbox Monday 8am. Free. One click to unsubscribe.

Visit the newsletter page →

Want to automate your operations?

Let's talk about your project in 15 minutes.

Book a call