CVE-2026-76033

Analyzed Analyzed - Analysis Complete

Inappropriate CORS Implementation in Google Chrome

Publication date: 2026-08-18

Last updated on: 2026-08-20

Assigner: Chrome

Description

Inappropriate implementation in CORS in Google Chrome prior to 151.0.7922.169 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-08-18

Last Modified

2026-08-20

Generated

2026-09-08

AI Q&A

2026-08-19

EPSS Evaluated

2026-09-06

NVD

CVE-2026-76033

EUVD

EUVD-2026-61225

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.169 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability is an inappropriate implementation in CORS (Cross-Origin Resource Sharing) in Google Chrome before version 151.0.7922.169. It allowed a remote attacker who had already compromised the renderer process to bypass site isolation through a specially crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 151.0.7922.169. Detection involves checking the installed Chrome version. On Windows, run 'chrome://settings/help' in Chrome to check for updates. On Linux, use 'google-chrome --version' or check package managers like 'apt list --installed | grep google-chrome'. If the version is below 151.0.7922.169, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access data from different sites or perform actions on behalf of the user, potentially leading to unauthorized access to sensitive information or account takeovers.

Compliance Impact

This vulnerability does not directly affect compliance with GDPR, HIPAA, or similar standards. It involves a bypass of site isolation in Chrome due to an inappropriate CORS implementation, which could allow a remote attacker to access limited data but does not inherently violate data protection regulations.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.169 or later to address the vulnerability.

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