CVE-2026-79238

Analyzed Analyzed - Analysis Complete

Incorrect Authorization in Google Chrome ServiceWorker

Publication date: 2026-08-25

Last updated on: 2026-08-28

Assigner: Chrome

Description

Incorrect authorization in ServiceWorker in Google Chrome prior to 152.0.7977.65 allowed a remote attacker leveraging social engineering to bypass web origin policy via a crafted Chrome extension. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-25

Last Modified

2026-08-28

Generated

2026-09-15

AI Q&A

2026-08-26

EPSS Evaluated

2026-09-13

NVD

CVE-2026-79238

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 152.0.7977.65 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This vulnerability involves incorrect authorization in ServiceWorker in Google Chrome versions before 152.0.7977.65. A remote attacker could exploit this by using a crafted Chrome extension to bypass web origin policy through social engineering tactics.

Detection Guidance

This vulnerability involves incorrect authorization in Google Chrome's ServiceWorker component. Detection requires checking Chrome version and reviewing installed extensions. Use chrome://version to check version and chrome://extensions to inspect extensions. Ensure Chrome is updated to version 152.0.7977.65 or later.

Impact Analysis

An attacker could potentially gain unauthorized access to sensitive data or perform actions on behalf of the user by bypassing origin-based security restrictions. This could lead to data theft, unauthorized transactions, or other malicious activities.

Compliance Impact

This vulnerability could lead to unauthorized access to personal or sensitive data, potentially violating GDPR (data protection) and HIPAA (health information privacy) requirements. Organizations using affected Chrome versions may face compliance risks and legal consequences.

Mitigation Strategies

Update Google Chrome to version 152.0.7977.65 or later to address the incorrect authorization in ServiceWorker that could allow bypassing web origin policy.

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