Insufficient Policy Enforcement in Chrome Canvas Leads to Cross-Origin Data Leak

Publication date: 2026-06-30

Last updated on: 2026-06-30

Assigner: Chrome

Description

Insufficient policy enforcement in Canvas in Google Chrome prior to 150.0.7871.47 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-30

Last Modified

2026-06-30

Generated

2026-07-01

AI Q&A

2026-07-01

EPSS Evaluated

N/A

NVD

CVE-2026-13840

EUVD

EUVD-2026-40526

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	150.0.7871.47

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-UNKNOWN

Attack-Flow Graph

Executive Summary

This vulnerability is an insufficient policy enforcement issue in the Canvas component of Google Chrome versions prior to 150.0.7871.47. It allows a remote attacker to leak cross-origin data by using a specially crafted HTML page.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of data from other origins, meaning that sensitive information from different websites could be exposed to an attacker through a malicious HTML page.

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