Privilege Escalation in Google Chrome Extensions

Publication date: 2026-06-05

Last updated on: 2026-06-08

Assigner: Chrome

Description

Inappropriate implementation in Extensions in Google Chrome prior to 149.0.7827.53 allowed an attacker who convinced a user to install a malicious extension to perform privilege escalation via a crafted Chrome Extension. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-05

Last Modified

2026-06-08

Generated

2026-07-15

AI Q&A

2026-06-05

EPSS Evaluated

2026-07-14

NVD

CVE-2026-11308

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-269	The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

Executive Summary

This vulnerability is due to an inappropriate implementation in the Extensions feature of Google Chrome versions prior to 149.0.7827.53. It allows an attacker who convinces a user to install a malicious Chrome extension to escalate their privileges through a specially crafted extension.

Impact Analysis

If exploited, this vulnerability could allow an attacker to gain higher privileges than intended within the Chrome browser environment by tricking a user into installing a malicious extension. This could potentially lead to unauthorized actions or access within the browser.

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