CVE-2026-14047 - Vulnerability Details

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:

Action:

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 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.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Google

Chrome

affected

Version	Status	Constraints
`150.0.7871.47`	affected	< 150.0.7871.47

No data.

Vendor Product Confidence Versions

Google

Chrome

100%

Version	Status	Scheme	Platform
`[150.0.7871.47,150.0.7871.47)`	affected	generic	—

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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 31, 2026 at 16:02 UTC.

Tracking

Sign in to view the affected projects.

Advisories

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

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00182.

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html
https://issues.chromium.org/issues/498864176

History

Fri, 31 Jul 2026 16:30:00 +0000

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

Sat, 25 Jul 2026 23:30:00 +0000

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

Wed, 22 Jul 2026 15:30:00 +0000

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

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		https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html https://issues.chromium.org/issues/498864176

Subscriptions

Google Chrome

MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2026-06-30T22:39:08.051Z

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

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

Link: CVE-2026-14047

Vulnrichment

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

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-31T16:15:03Z

Weaknesses

CWE-602
Client-Side Enforcement of Server-Side Security

Impact

Affected Systems

Risk and Exploitability

Tracking

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction Required

Exploitation none

Automatable no

Technical Impact partial

Subscriptions

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