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)
Published: 2026-06-30
Score: 4.2 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The flaw arises from incorrect handling of the Extensions user interface in Google Chrome versions prior to 150.0.7871.47. It enables a user‑experience cross‑site scripting (UXSS) attack whereby an attacker, after getting a user to install a malicious extension, can trigger the vulnerability by navigating to a specially crafted web page. In that state the attacker can inject arbitrary scripts or HTML that execute in the browser context.

Affected Systems

Any installation of Google Chrome older than version 150.0.7871.47, including all desktop releases on Windows, macOS, and Linux, is affected.

Risk and Exploitability

The CVSS score is 4.2, categorizing it as a medium‑severity issue, while the EPSS score of less than 1% shows a very low probability of exploitation. The vulnerability is not listed in the CISA KEV catalog. Exploitation requires the attacker to first persuade a user to install an untrusted extension and then have the user visit a maliciously crafted web page; the outcome is execution of arbitrary script or HTML within the browser environment.

Generated by OpenCVE AI on August 3, 2026 at 06:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 150.0.7871.47 or newer
  • Remove or disable any extensions that come from untrusted or unknown sources
  • Verify the source and permissions of extensions before installing them

Generated by OpenCVE AI on August 3, 2026 at 06:35 UTC.

Tracking

Sign in to view the affected projects.

Advisories
Source ID Title
Debian DLA Debian DLA DLA-4672-1 chromium security update
Debian DSA Debian DSA DSA-6378-1 chromium security update
History

Mon, 03 Aug 2026 07:00:00 +0000

Type Values Removed Values Added
Title User‑Experience Cross‑Site Scripting via Malicious Extension in Chrome

Wed, 29 Jul 2026 22:45:00 +0000

Type Values Removed Values Added
Title User‑Experience Cross‑Site Scripting via Malicious Extension in Chrome

Sat, 25 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
Title Incorrect Extension UI Allows User‑Experience Cross‑Site Scripting via Malicious Extensions

Wed, 22 Jul 2026 15:45:00 +0000

Type Values Removed Values Added
Title Incorrect Extension UI Allows User‑Experience Cross‑Site Scripting via Malicious Extensions

Wed, 15 Jul 2026 11:15:00 +0000

Type Values Removed Values Added
Title UXSS Vulnerability in Chrome Extensions UI

Mon, 13 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Title UXSS Vulnerability in Chrome Extensions UI

Sat, 11 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Title User‑Experience Cross‑Site Scripting via Malicious Chrome Extension

Fri, 10 Jul 2026 04:15:00 +0000

Type Values Removed Values Added
Title User‑Experience Cross‑Site Scripting via Malicious Chrome Extension

Thu, 09 Jul 2026 03:00:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI flaw allows injection of arbitrary scripts via crafted web pages

Wed, 08 Jul 2026 03:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI flaw allows injection of arbitrary scripts via crafted web pages

Tue, 07 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI Allows User‑Experience Cross‑Site Scripting

Mon, 06 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI Allows User‑Experience Cross‑Site Scripting

Sun, 05 Jul 2026 19:45:00 +0000

Type Values Removed Values Added
Title User‑experience cross‑site scripting via malicious Chrome extension

Sun, 05 Jul 2026 04:00:00 +0000

Type Values Removed Values Added
Title User‑experience cross‑site scripting via malicious Chrome extension

Sat, 04 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
Title Incorrect Extension UI Enables UXSS via Malicious Extension

Fri, 03 Jul 2026 20:15:00 +0000

Type Values Removed Values Added
Title Incorrect Extension UI Enables UXSS via Malicious Extension

Fri, 03 Jul 2026 09:15:00 +0000

Type Values Removed Values Added
Title Extension UI allows injected scripts via malicious extension

Fri, 03 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
Title Extension UI allows injected scripts via malicious extension

Thu, 02 Jul 2026 20:00:00 +0000

Type Values Removed Values Added
Title Google Chrome Extension UI Script Injection Flaw

Thu, 02 Jul 2026 11:45:00 +0000

Type Values Removed Values Added
Title Google Chrome Extension UI Script Injection Flaw

Wed, 01 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting via Incorrect Extension UI in Chrome

Wed, 01 Jul 2026 20:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 4.2, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 01 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Cross‑Site Scripting via Incorrect Extension UI in Chrome
Weaknesses CWE-79

Wed, 01 Jul 2026 13:15:00 +0000

Type Values Removed Values Added
First Time appeared Google
Google chrome
Vendors & Products Google
Google chrome

Wed, 01 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI flaw permits arbitrary script and HTML injection
Weaknesses CWE-79

Wed, 01 Jul 2026 01:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension UI flaw permits arbitrary script and HTML injection
Weaknesses CWE-79

Tue, 30 Jun 2026 23:15:00 +0000

Type Values Removed Values Added
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)
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-01T19:38:27.717Z

Reserved: 2026-06-29T23:04:01.496Z

Link: CVE-2026-13957

cve-icon Vulnrichment

Updated: 2026-07-01T19:38:22.670Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-03T06:45:03Z

Weaknesses
  • CWE-79

    Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')