What is CVE-2021-4323?

CVE-2021-4323 is a vulnerability in Google Chrome that allows an attacker to access local files via a malicious extension.

How does CVE-2021-4323 work?

CVE-2021-4323 takes advantage of insufficient input validation in Google Chrome extensions to trick users into installing a malicious extension that can access their local files.

How severe is CVE-2021-4323?

CVE-2021-4323 has a severity rating of medium, with a score of 6.5 out of 10.

Which versions of Google Chrome are affected by CVE-2021-4323?

Google Chrome versions prior to 90.0.4430.72 are affected by CVE-2021-4323.

How can I fix CVE-2021-4323?

To fix CVE-2021-4323, update your Google Chrome browser to version 90.0.4430.72 or later.

Vulnerability/
CVE-2021-4323

medium

6.5

CWE

9/2/2021

28/7/2023

3/10/2024

CVE-2021-4323: Insufficient validation of untrusted input in Extensions

First published: Tue Feb 09 2021(Updated: )

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 90.0.4430.72 allowed an attacker who convinced a user to install a malicious extension to access local files via a crafted Chrome Extension. (Chromium security severity: Medium)

Credit: chrome-cve-admin@google.com chrome-cve-admin@google.com Luan Herrera @lbherrera_

Affected Software	Affected Version	How to fix
Google Chrome	<90.0.4430.72
Google Chrome	<90.0.4430.72	90.0.4430.72

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

273411975827701477

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

What is CVE-2021-4323?
CVE-2021-4323 is a vulnerability in Google Chrome that allows an attacker to access local files via a malicious extension.
How does CVE-2021-4323 work?
CVE-2021-4323 takes advantage of insufficient input validation in Google Chrome extensions to trick users into installing a malicious extension that can access their local files.
How severe is CVE-2021-4323?
CVE-2021-4323 has a severity rating of medium, with a score of 6.5 out of 10.
Which versions of Google Chrome are affected by CVE-2021-4323?
Google Chrome versions prior to 90.0.4430.72 are affected by CVE-2021-4323.
How can I fix CVE-2021-4323?
To fix CVE-2021-4323, update your Google Chrome browser to version 90.0.4430.72 or later.

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collector/mitre-cve
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collector/chrome-releases
agent/software-canonical-lookup
agent/title
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agent/author
agent/softwarecombine
agent/tags
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vendor/google
canonical/google chrome

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