CVE-2026-13957

Analyzed Analyzed - Analysis Complete

Incorrect Security UI in Google Chrome Extensions Allows UXSS

Publication date: 2026-06-30

Last updated on: 2026-07-02

Assigner: Chrome

Description

Incorrect security UI in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to inject arbitrary scripts or HTML (UXSS) via a crafted HTML page. (Chromium security severity: Medium)

CVSS Scores

EPSS Scores

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Meta Information

Published

2026-06-30

Last Modified

2026-07-02

Generated

2026-07-21

AI Q&A

2026-07-01

EPSS Evaluated

2026-07-19

NVD

CVE-2026-13957

EUVD

EUVD-2026-40645

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 150.0.7871.47 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-79	The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Attack-Flow Graph

Executive Summary

This vulnerability is an incorrect security user interface issue in the Extensions feature of Google Chrome versions prior to 150.0.7871.47. It allows an attacker who convinces a user to install a malicious extension to inject arbitrary scripts or HTML content through a crafted HTML page, leading to a type of cross-site scripting known as UXSS (Universal Cross-Site Scripting).

Impact Analysis

If exploited, this vulnerability can allow an attacker to execute arbitrary scripts or HTML in the context of the browser, potentially leading to unauthorized actions, data theft, or manipulation of web content without the user's consent.

Mitigation Strategies

To mitigate this vulnerability, update Google Chrome to version 150.0.7871.47 or later, as the issue affects versions prior to this release.

Avoid installing extensions from untrusted sources to prevent attackers from exploiting the incorrect security UI to inject arbitrary scripts or HTML.

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