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Cursor, Windsurf IDEs riddled with 94+ n-day Chromium vulnerabilities

BleepingComputer
·
Bill Toulas
·
Published Oct 21, 2025
·
Updated

The latest releases of Cursor and Windsurf integrated development environments are vulnerable to more than 94 known and patched security issues in the Chromium browser and the V8 JavaScript engine. An estimated 1.8 million developers, the userbase for the two IDEs, are exposed to the risks. Ox Security researchers explain that both development environments are built on old software that includes outdated versions of the open-source Chromium browser and Google's V8 engine. They say that Cursor and Windsurf rely on old versions of VS Code that include old releases of the Electron framework for building cross-platform apps using web technologies (HTML, CSS, JavaScript). "Since Electron embeds Chromium and V8, this means the IDEs rely on outdated Chromium and V8 engines, exposing them to vulnerabilities that have already been patched in newer versions," the researchers say in a report shared with BleepingComputer. The researchers say that Cursor and Windsurf are vulnerable to at least 94 vulnerabilities present in the Chromium builds they use. Despite the security issue being disclosed responsibly since October 12, the risks are still present as Cursor considered the report "out of scope" and Windsurf did not respond. Cursor and Windsurf are AI-powered code editors forked from Visual Studio Code. They integrate large-language models (LLMs) to help developers write software more easily and quickly. They are distributed as Electron apps, meaning an application runtime that package...

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Affected Software

5 affected components
Cursor Cursor
Windsurf Windsurf
Chromium Chromium
Google V8
Electron Electron
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Frequently Asked Questions

1

What are the main vulnerabilities discussed in this article?

The article discusses over 94 known and patched security vulnerabilities in Cursor and Windsurf IDEs due to their reliance on the Chromium browser and V8 JavaScript engine.

2

Which integrated development environments are affected by these vulnerabilities?

The affected integrated development environments are Cursor and Windsurf.

3

What are the potential consequences of these vulnerabilities for developers?

Developers using Cursor and Windsurf may face security risks such as code exploitation and data breaches due to these vulnerabilities.

4

How many users are estimated to be impacted by these vulnerabilities?

An estimated 1.8 million developers could be affected by the vulnerabilities in Cursor and Windsurf IDEs.

5

What underlying components are responsible for the vulnerabilities in these IDEs?

The vulnerabilities stem from components in the Chromium browser and the V8 JavaScript engine used by these IDEs.

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