CVE-2021-21228

MEDIUM 4.3CVE-2021-21228 · Published 30/04/2021 · updated 17/06/2026

In short

CVE-2021-21228 is a MEDIUM (CVSS 4.3) vulnerability affecting chrome (google).
Chance of exploitation in the next 30 days (EPSS): 1.1%, higher than 64.8% of all vulnerabilities.
Fix: update to 90.0.4430.93 or later.

Package	Affected versions	Patched versions
chrome google	`< 90.0.4430.93`	`90.0.4430.93`

Description

Insufficient policy enforcement in extensions in Google Chrome prior to 90.0.4430.93 allowed an attacker who convinced a user to install a malicious extension to bypass navigation restrictions via a crafted Chrome Extension.

References

chromereleases.googleblog.com/2021/04/stable-channel-update-for-desktop_26.html · Release Notes
crbug.com/1139156 · Broken Link
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/EAJ42L4JFPBJATCZ7MOZQTUDGV4OEHHG
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U3GZ42MYPGD35V652ZPVPYYS7A7LVXVY
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUZBGKGVZADNA3I24NVG7HAYYUTOSN5A
security.gentoo.org/glsa/202104-08 · Third Party Advisory
debian.org/security/2021/dsa-4911 · Third Party Advisory

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