CVE-2026-87517
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Race Condition in Google Chrome for iOS

Vulnerability report for CVE-2026-87517, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description

Race condition in Mobile in Google Chrome on on iOS prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to bypass web origin policy via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

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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
EUVD

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-367 The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check.

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Executive Summary

This is a race condition vulnerability in Google Chrome on iOS versions prior to 153.0.8010.36. It allows a remote attacker to bypass web origin policy through a crafted HTML page, potentially tricking users into interacting with malicious content.

Detection Guidance

This vulnerability involves a race condition in Google Chrome on iOS. Detection requires checking the Chrome version on iOS devices. If the version is below 153.0.8010.36, the system is vulnerable. Use the App Store or device settings to verify the installed version.

Impact Analysis

An attacker could exploit this to access sensitive data or perform unauthorized actions on your behalf by bypassing security restrictions. Social engineering may be required to trick you into visiting the malicious page.

Compliance Impact

This vulnerability involves a race condition in Google Chrome on iOS that allows bypassing web origin policy via crafted HTML. While it may lead to unauthorized data access, the provided details do not specify direct impacts on GDPR or HIPAA compliance. However, bypassing origin policies could potentially violate data protection principles under GDPR (e.g., unauthorized access to personal data) or HIPAA (e.g., unauthorized disclosure of protected health information).

Mitigation Strategies

Update Google Chrome on iOS to version 153.0.8010.36 or later to address the race condition vulnerability.

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