CVE-2021-4323

Public Exploit

Description

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)

6.5

CVSS

Severity: Medium

CVSS 3.1 •

EPSS 0.05%

Vendor Advisory googleblog.com Vendor Advisory crbug.com

Affected: Google Chrome

References

Link	Tags
https://chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_14.html	release notes vendor advisory
https://crbug.com/1176031	vendor advisory issue tracking exploit
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PQKT7EGDD2P3L7S3NXEDDRCPK4NNZNWJ/

Frequently Asked Questions

What is the severity of CVE-2021-4323?: CVE-2021-4323 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4323?: To fix CVE-2021-4323, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4323 being actively exploited in the wild?: It is possible that CVE-2021-4323 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4323?: CVE-2021-4323 affects Google Chrome.

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