Description
Insufficient policy enforcement in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to bypass content security policy via a crafted Chrome Extension. (Chromium security severity: Low)
Published: 2026-06-30
Score: 4.3 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

Insufficient policy enforcement in Google Chrome allows an attacker who convinces a user to install a crafted extension to bypass the browser’s content security policy. The flaw is identified as CWE-602, reflecting improper client-side handling that permits the extension to execute scripts normally blocked by CSP. This can lead to unauthorized code execution within the user’s browsing context and expose the user to additional attacks.

Affected Systems

Google Chrome versions earlier than 150.0.7871.47, across all distribution channels, are affected by this vulnerability.

Risk and Exploitability

The vulnerability requires social engineering to persuade a user to install a malicious extension, which is inferred from the description that the attacker must convince the user to install. EPSS is below 1% and the vulnerability is not listed in CISA’s KEV catalog, indicating a low probability of widespread exploitation. The CVSS score of 4.3 reflects low severity, but the CSP bypass undermines the browser’s security model and may enable further attacks after the user gains access to a target page.

Generated by OpenCVE AI on July 17, 2026 at 13:56 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade Google Chrome to version 150.0.7871.47 or later
  • Configure Chrome policies to block installation of extensions from untrusted developers, such as ExtensionInstallBlacklist
  • Remove or disable any extensions that are not essential or come from unverified sources

Generated by OpenCVE AI on July 17, 2026 at 13:56 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

Wed, 15 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
Title CSP Bypass via Malicious Chrome Extension

Tue, 14 Jul 2026 20:15:00 +0000

Type Values Removed Values Added
Title CSP Bypass via Malicious Chrome Extension

Mon, 13 Jul 2026 16:15:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Malicious Extension

Sun, 12 Jul 2026 10:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Malicious Extension

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

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Malicious Extension

Thu, 09 Jul 2026 15:15:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Malicious Extension

Wed, 08 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Title CSP Bypass via Malicious Chrome Extension

Tue, 07 Jul 2026 16:00:00 +0000

Type Values Removed Values Added
Title CSP Bypass via Malicious Chrome Extension

Mon, 06 Jul 2026 03:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass Due to Inadequate Policy Enforcement

Sun, 05 Jul 2026 14:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass Due to Inadequate Policy Enforcement

Sun, 05 Jul 2026 03:45:00 +0000

Type Values Removed Values Added
Title Chrome CSP Bypass via Malicious Extension

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

Type Values Removed Values Added
Title Chrome CSP Bypass via Malicious Extension

Fri, 03 Jul 2026 23:45:00 +0000

Type Values Removed Values Added
Title Chrome Extension Content Security Policy Bypass Vulnerability

Fri, 03 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension Content Security Policy Bypass Vulnerability

Thu, 02 Jul 2026 22:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Insufficient Policy Enforcement

Thu, 02 Jul 2026 11:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension CSP Bypass via Insufficient Policy Enforcement

Thu, 02 Jul 2026 04:45:00 +0000

Type Values Removed Values Added
Title Malicious Chrome Extension Bypasses Content Security Policy via Insufficient Policy Enforcement

Wed, 01 Jul 2026 19:15:00 +0000

Type Values Removed Values Added
Title Malicious Chrome Extension Bypasses Content Security Policy via Insufficient Policy Enforcement

Wed, 01 Jul 2026 14:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-602
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N'}

ssvc

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

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

Type Values Removed Values Added
Title Chrome Extension Causes Content Security Policy Bypass
Weaknesses CWE-284

Wed, 01 Jul 2026 08:15:00 +0000

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

Wed, 01 Jul 2026 02:30:00 +0000

Type Values Removed Values Added
Title Chrome Extension Causes Content Security Policy Bypass
Weaknesses CWE-284

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

Type Values Removed Values Added
Description Insufficient policy enforcement in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to bypass content security policy via a crafted Chrome Extension. (Chromium security severity: Low)
References

Subscriptions

Google Chrome
cve-icon MITRE

Status: PUBLISHED

Assigner: Chrome

Published:

Updated: 2026-07-01T13:17:19.918Z

Reserved: 2026-06-29T23:11:31.424Z

Link: CVE-2026-14047

cve-icon Vulnrichment

Updated: 2026-07-01T13:17:10.804Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-17T14:00:16Z

Weaknesses
  • CWE-602

    Client-Side Enforcement of Server-Side Security