CVE-2026-87485
Analyzed Analyzed - Analysis Complete

Incorrect Authorization in CORS in Google Chrome

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description
Incorrect 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-2026-87485
EUVD
EUVD-2026-74325

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-863 The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.

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Executive Summary

This vulnerability involves incorrect authorization in CORS (Cross-Origin Resource Sharing) in Google Chrome versions before 153.0.8010.36. It allowed a remote attacker who had already compromised the renderer process to bypass the web origin policy. This means the attacker could interact with resources on different domains than intended, potentially accessing sensitive data or performing unauthorized actions.

Detection Guidance

This vulnerability involves incorrect authorization in CORS in Google Chrome. Detection primarily requires checking the Chrome version installed on systems. Use commands like 'google-chrome --version' or 'chromium-browser --version' to verify if the version is prior to 153.0.8010.36.

Impact Analysis

If you are a user of an affected Chrome version, an attacker could exploit this to access data from other websites while you are logged in, leading to potential theft of sensitive information like cookies, session tokens, or personal data. It could also allow unauthorized actions on behalf of the user on trusted sites.

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

Immediately update Google Chrome to version 153.0.8010.36 or later. Disable automatic updates temporarily if needed, but prioritize updating to patch the vulnerability. Remove or restrict access to untrusted HTML pages that could exploit this issue.

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