CVE-2026-87453
Analyzed Analyzed - Analysis Complete

Confused Deputy in Chrome BackgroundFetch

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: Chrome

Description
Confused deputy in BackgroundFetch in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to leak sensitive information 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
2026-09-30
AI Q&A
2026-09-10
EPSS Evaluated
2026-09-27
NVD
CVE-2026-87453
EUVD
EUVD-2026-74535

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-441 The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

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Executive Summary

This vulnerability is a confused deputy issue in Google Chrome's BackgroundFetch feature. It allows an attacker who has compromised the renderer process to trick the browser into leaking sensitive information through a specially crafted HTML page.

Detection Guidance

Detection requires checking the Chrome version. Run 'google-chrome --version' or check via 'chrome://settings/help' in the browser. If the version is below 153.0.8010.36, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access sensitive data that the compromised renderer process could access, potentially exposing personal or confidential information.

Compliance Impact

This vulnerability involves a confused deputy in BackgroundFetch in Google Chrome, allowing a remote attacker to leak sensitive information via a crafted HTML page. This could lead to unauthorized access to personal data, which may violate GDPR's data protection principles and HIPAA's confidentiality requirements if sensitive health or personal data is exposed.

Mitigation Strategies

Update Google Chrome to version 153.0.8010.36 or later immediately. Disable BackgroundFetch if not needed and avoid visiting untrusted websites until patched.

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