vulnerability

Google Chrome Vulnerability: CVE-2021-21135 Inappropriate implementation in Performance API

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
Feb 9, 2021
Added
Feb 16, 2021
Modified
Mar 30, 2026

Description

Inappropriate implementation in Performance API in Google Chrome prior to 88.0.4324.96 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

Solution

google-chrome-upgrade-latest
Title
Rapid7 Labs

2026 Global Threat Landscape Report

The predictive window has collapsed. Exploitation follows disclosure in days. See how attackers are accelerating and how to stay ahead.