CVE-2021-21127

PoC —

CVSS 3.1

8.8 high

EPSS

6%p93

Published

Feb 9, 2021 (Feb 9, 2021)

Modified

Jun 17, 2026

Description

Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass content security policy via a crafted Chrome Extension.

Vendors: google microsoft
Products: chrome, edge chromium
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (5.9%)

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