CVE-2026-7909
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ServiceWorker Implementation Flaw in Google Chrome

Publication date: 2026-05-06

Last updated on: 2026-05-06

Assigner: Chrome

Description
Inappropriate implementation in ServiceWorker in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)

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Meta Information

Published
2026-05-06
Last Modified
2026-05-06
Generated
2026-07-06
AI Q&A
2026-05-06
EPSS Evaluated
2026-07-05
NVD
CVE-2026-7909
EUVD
EUVD-2026-27921

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
google chrome to 148.0.7778.96 (exc)

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Exploitability

CWE
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KEV
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CWE ID Description
CWE-693 The product does not use or incorrectly uses a protection mechanism that provides sufficient defense against directed attacks against the product.

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Executive Summary

This vulnerability is an inappropriate implementation in the ServiceWorker component of Google Chrome versions prior to 148.0.7778.96. It allows a remote attacker, who has already compromised the renderer process, to bypass site isolation by using a specially crafted HTML page.

Impact Analysis

The vulnerability can allow an attacker to bypass site isolation protections in the browser. This means that an attacker who has compromised the renderer process could potentially access or manipulate data from other sites or browser contexts that should be isolated, increasing the risk of data leakage or unauthorized access.

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