The latest releases ofCursor and Windsurf integrated development environmentsare vulnerable to more than 94 known and patched security issues in the Chromium browser and the V8 JavaScript engine.
An estimated1.8 million developers, the userbase for the two IDEs, are exposed to the risks.
Ox Security researchersexplain 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“Since Electron embeds Chromium and V8, this means the IDEs rely on outdated Chromium and V8 engines, exposing them to vulnerabilities that have already been patched in newer versions,” the researchers say in a report shared with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 asCursor considered the report”out of scope” and Windsurf did not respond.
fixedon July 15.
The proof-of-concept exploit caused Cursor to enter a denial-of-service condition (crash), as shown in the video below:
However, Ox Security notes that arbitrary code execution is also possible in real-world attacks.
An adversary would have multiple options to trigger the vulnerability. The researchers say that an attacker could use a malicious extension to trigger the exploitor inject the exploit code into documentation and tutorials.
Hackers could also rely on classic phishing attacks or leverage poisoned repositories by planting malicious code in README files that are previewed in the IDE.
.jpg)
BleepingComputer has contacted both Cursor and Windsurf asking for a comment on Ox Security’s report, but we have not heard back by publication time.
Bill Toulas
Bill Toulas is a tech writer and infosec news reporter with over a decade of experience working on various online publications, covering open-source, Linux, malware, data breach incidents, and hacks.
