CVE-2026-87573
Analyzed Analyzed - Analysis Complete

Improper Input Validation in Google Chrome

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description
Improper input validation in Network in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Medium)

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Meta Information

Published
2026-09-09
Last Modified
2026-09-09
Generated
2026-09-29
AI Q&A
2026-09-09
EPSS Evaluated
2026-09-27
NVD
CVE-2026-87573
EUVD
EUVD-2026-74359

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 153.0.8010.36 (exc)

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Exploitability

CWE
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KEV
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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.

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Executive Summary

This vulnerability involves improper input validation in Google Chrome's Network component. A remote attacker could exploit it by crafting a malicious HTML page to bypass the web origin policy, which normally restricts how documents interact with resources from different origins.

Detection Guidance

This vulnerability involves improper input validation in Google Chrome, allowing origin policy bypass. Detection requires checking Chrome version and monitoring for suspicious web activity. Use chrome://version to check the installed version. If the version is below 153.0.8010.36, the system is vulnerable. No specific commands are provided for detection beyond version verification.

Impact Analysis

An attacker could use this flaw to access or manipulate data on websites you visit, potentially stealing sensitive information like login credentials or personal data. It undermines the security boundary between different websites.

Compliance Impact

This vulnerability could lead to unauthorized data access or breaches, violating GDPR's data protection requirements or HIPAA's safeguards for protected health information. Organizations may face compliance penalties if exploited.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the improper input validation flaw.

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