Cross-Origin Data Leak via CSS in Google Chrome

Publication date: 2026-06-04

Last updated on: 2026-06-08

Assigner: Chrome

Description

Inappropriate implementation in CSS 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: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-04

Last Modified

2026-06-08

Generated

2026-07-15

AI Q&A

2026-06-05

EPSS Evaluated

2026-07-14

NVD

CVE-2026-11156

EUVD

EUVD-2026-34617

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-352	The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor.

Attack-Flow Graph

Impact Analysis

The vulnerability can impact you by enabling a remote attacker to access data from other origins that should normally be protected, potentially exposing sensitive information through cross-origin data leakage.

Executive Summary

This vulnerability is due to an inappropriate implementation in CSS in 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.

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