CVE-2026-17882

Analyzed Analyzed - Analysis Complete

Extensions Policy Bypass in Google Chrome

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: Chrome

Description

Policy bypass in Extensions in Google Chrome prior to 151.0.7922.72 allowed an attacker who convinced a user to install a malicious extension to bypass site isolation via a crafted Chrome Extension. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-07-30

Last Modified

2026-08-03

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-17882

EUVD

EUVD-2026-50631

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.72 (exc)

Helpful Resources

Exploitability

CWE

KEV

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.

Attack-Flow Graph

Executive Summary

This vulnerability is a policy bypass in Google Chrome's Extensions feature. It allows an attacker to trick a user into installing a malicious extension that can bypass site isolation protections in Chrome versions before 151.0.7922.72.

Detection Guidance

Detection of this vulnerability requires checking the installed Chrome version and reviewing installed extensions. Compare your Chrome version against 151.0.7922.72 or later. Use chrome://version/ to check the version. Inspect extensions via chrome://extensions/ for any suspicious or unknown extensions.

Impact Analysis

If exploited, this vulnerability could allow an attacker to access data across different websites or perform actions on behalf of the user without proper site isolation. This increases the risk of data theft or unauthorized actions.

Compliance Impact

This vulnerability allows a malicious extension to bypass site isolation, potentially enabling unauthorized access to sensitive user data. This could impact compliance with GDPR by risking data exposure and HIPAA by compromising protected health information if exploited.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.72 or later to address the policy bypass vulnerability in Extensions.

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