Insufficient Policy Enforcement in Extensions in Google Chrome

Publication date: 2026-06-04

Last updated on: 2026-06-08

Assigner: Chrome

Description

Insufficient policy enforcement in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to inject scripts or HTML into a privileged page via a crafted Chrome Extension. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-06-04

Last Modified

2026-06-08

Generated

2026-07-15

AI Q&A

2026-06-05

EPSS Evaluated

2026-07-14

NVD

CVE-2026-11062

EUVD

EUVD-2026-34510

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 149.0.7827.53 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-602	The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.

Attack-Flow Graph

Executive Summary

This vulnerability is an insufficient policy enforcement issue in Google Chrome extensions prior to version 149.0.7827.53. It allows an attacker who convinces a user to install a malicious extension to inject scripts or HTML into a privileged page by using a specially crafted Chrome Extension.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run unauthorized scripts or inject HTML into privileged pages within the browser. This could lead to unauthorized actions, data exposure, or manipulation of browser behavior, potentially compromising user security and privacy.

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