VULNERABILITY INTELLIGENCE
CVE-2021-21126
CVSS score6.5 MEDIUM
EPSS probability8.73%
CISA KEVNot currently listed
Published2021-02-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Description
Insufficient policy enforcement in extensions in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to bypass site isolation via a crafted Chrome Extension.
Weakness classification
- nvd@nist.gov: CWE-20
Primary references
- chrome-cve-admin@google.com — Release Notes, Vendor Advisory
- chrome-cve-admin@google.com — Permissions Required, Third Party Advisory
- chrome-cve-admin@google.com — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Release Notes, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Permissions Required, Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory