Side-channel Data Leakage in Google Chrome

Publication date: 2026-06-05

Last updated on: 2026-06-09

Assigner: Chrome

Description

Side-channel information leakage in PerformanceAPIs in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-05

Last Modified

2026-06-09

Generated

2026-07-15

AI Q&A

2026-06-05

EPSS Evaluated

2026-07-14

NVD

CVE-2026-11284

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 149.0.7827.53 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-1300	The device does not contain sufficient protection mechanisms to prevent physical side channels from exposing sensitive information due to patterns in physically observable phenomena such as variations in power consumption, electromagnetic emissions (EME), or acoustic emissions.
CWE-203	The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

Attack-Flow Graph

Executive Summary

This vulnerability is a side-channel information leakage issue in the Performance APIs of Google Chrome versions prior to 149.0.7827.53. It allows a remote attacker to leak cross-origin data by using a specially crafted HTML page.

Impact Analysis

An attacker exploiting this vulnerability could obtain information from other origins (websites) that the user has visited, potentially exposing sensitive data without the user's consent.

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