CVE-2026-87434
Analyzed Analyzed - Analysis Complete

Missing Authorization in CORS in Google Chrome

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description
Missing authorization in CORS in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process 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-2026-87434
EUVD
EUVD-2026-74533

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

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Executive Summary

This vulnerability involves missing authorization in CORS (Cross-Origin Resource Sharing) in Google Chrome versions before 153.0.8010.36. It allowed a remote attacker who had compromised the renderer process to bypass web origin policy by using a crafted HTML page.

Detection Guidance

This vulnerability involves missing authorization in CORS in Google Chrome. Detection primarily requires checking the Chrome version and monitoring for unusual cross-origin requests. Use chrome://version to check the version. If it is below 153.0.8010.36, the system is vulnerable. No specific commands are provided for network detection beyond version verification.

Impact Analysis

An attacker could exploit this to access restricted resources on websites you visit, potentially stealing sensitive data or performing unauthorized actions on your behalf if they compromise the renderer process.

Compliance Impact

This vulnerability allows a remote attacker to bypass web origin policy, potentially enabling unauthorized access to sensitive data. This could impact compliance with GDPR by risking unauthorized data exposure and HIPAA by compromising protected health information if exploited in healthcare contexts.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later to address the missing authorization in CORS vulnerability.

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