CVE-2026-13999 - Vulnerability Details

Description

Insufficient validation of untrusted input in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Medium)

Published: 2026-06-30

Score: 4.3 Medium

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Impact

Insufficient validation of untrusted input in Chrome extensions prior to 150.0.7871.47 allows an attacker who convinces a user to install a malicious extension to perform UI spoofing through a crafted Chrome extension. The flaw is an input validation weakness (CWE-20), enabling the attacker to display user interfaces that mimic legitimate browser prompts or other interface components, potentially leading to social engineering and data compromise.

Affected Systems

Google Chrome versions before 150.0.7871.47 are affected. The issue applies to the stable channel across all platforms where Chrome runs, though specific operating systems are not listed in the advisory.

Risk and Exploitability

The CVSS score is 4.3, indicating moderate risk, and the EPSS score of less than 1% suggests a low likelihood of exploitation. The vulnerability is not listed in the CISA KEV catalog. Attackers would need to persuade a user to install a malicious extension; once installed, the extension can present spoofed UI elements. The vulnerability does not require additional system compromise beyond the user’s installation decision.

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 Chrome to 150.0.7871.47 or later to apply the official fix.
Remove or reevaluate any extensions installed before the update that cannot be verified as trustworthy.
In managed environments, configure Chrome policy to allow installation only from the Chrome Web Store or signed extensions, blocking untrusted extensions.

Generated by OpenCVE AI on August 2, 2026 at 00:21 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 0.00176.

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/514071697

History

Sun, 02 Aug 2026 00:45:00 +0000

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension

Tue, 28 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Title	UI Spoofing via Malicious Chrome Extension

Fri, 24 Jul 2026 18:30:00 +0000

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension

Tue, 21 Jul 2026 16:45:00 +0000

Type	Values Removed	Values Added
Title	Insufficient input validation in Chrome extensions leading to UI spoofing

Thu, 16 Jul 2026 00:00:00 +0000

Type	Values Removed	Values Added
Title		Insufficient input validation in Chrome extensions leading to UI spoofing

Tue, 14 Jul 2026 11:45:00 +0000

Type	Values Removed	Values Added
Title	Chrome UI Spoofing via Untrusted Extension Input

Mon, 13 Jul 2026 05:15:00 +0000

Type	Values Removed	Values Added
Title		Chrome UI Spoofing via Untrusted Extension Input

Sun, 12 Jul 2026 02:45:00 +0000

Type	Values Removed	Values Added
Title	Chrome Extension UI Spoofing Vulnerability

Fri, 10 Jul 2026 18:15:00 +0000

Type	Values Removed	Values Added
Title		Chrome Extension UI Spoofing Vulnerability

Thu, 09 Jul 2026 21:30:00 +0000

Type	Values Removed	Values Added
Title	Chrome Extension UI Spoofing Vulnerability in Versions Prior to 150.0.7871.47

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

Type	Values Removed	Values Added
Title		Chrome Extension UI Spoofing Vulnerability in Versions Prior to 150.0.7871.47

Wed, 08 Jul 2026 08:30:00 +0000

Type	Values Removed	Values Added
Title	Insufficient Validation of Untrusted Input in Chrome Extensions Enabling UI Spoofing

Tue, 07 Jul 2026 16:15:00 +0000

Type	Values Removed	Values Added
Title		Insufficient Validation of Untrusted Input in Chrome Extensions Enabling UI Spoofing

Tue, 07 Jul 2026 04:15:00 +0000

Type	Values Removed	Values Added
Title	Chrome Extension UI Spoofing via Input Validation Flaw

Mon, 06 Jul 2026 07:30:00 +0000

Type	Values Removed	Values Added
Title		Chrome Extension UI Spoofing via Input Validation Flaw

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

Type	Values Removed	Values Added
Title	Chrome Extension UI Spoofing Vulnerability via Malicious Extension

Sun, 05 Jul 2026 07:15:00 +0000

Type	Values Removed	Values Added
Title		Chrome Extension UI Spoofing Vulnerability via Malicious Extension

Sat, 04 Jul 2026 20:00:00 +0000

Type	Values Removed	Values Added
Title	UI Spoofing via Malicious Chrome Extension

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

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension

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

Type	Values Removed	Values Added
Title	UI Spoofing via Malicious Chrome Extension Due to Insufficient Input Validation

Thu, 02 Jul 2026 22:45:00 +0000

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension Due to Insufficient Input Validation

Thu, 02 Jul 2026 14:30:00 +0000

Type	Values Removed	Values Added
Title	UI Spoofing via Malicious Chrome Extension due to Unvalidated Extension Input

Thu, 02 Jul 2026 06:45:00 +0000

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension due to Unvalidated Extension Input

Thu, 02 Jul 2026 02:15:00 +0000

Type	Values Removed	Values Added
Title	UI Spoofing via Malicious Chrome Extension with Insufficient Input Validation

Wed, 01 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Title		UI Spoofing via Malicious Chrome Extension with Insufficient Input Validation

Wed, 01 Jul 2026 15:30:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-20
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 10:30:00 +0000

Type	Values Removed	Values Added
Title	Insufficient Validation of Extension Input Enables UI Spoofing in Google Chrome
Weaknesses	CWE-79

Wed, 01 Jul 2026 08:45:00 +0000

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

Wed, 01 Jul 2026 02:45:00 +0000

Type	Values Removed	Values Added
Title		Insufficient Validation of Extension Input Enables UI Spoofing in Google Chrome
Weaknesses		CWE-79

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

Type	Values Removed	Values Added
Description		Insufficient validation of untrusted input in Extensions in Google Chrome prior to 150.0.7871.47 allowed an attacker who convinced a user to install a malicious extension to perform UI spoofing via a crafted Chrome Extension. (Chromium security severity: Medium)
References		https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0175352312.html https://issues.chromium.org/issues/514071697

Subscriptions

Google Chrome

MITRE

Status: PUBLISHED

Assigner: Chrome

Published: 2026-06-30T22:38:50.846Z

Updated: 2026-07-01T14:28:21.246Z

Reserved: 2026-06-29T23:04:14.555Z

Link: CVE-2026-13999

Vulnrichment

Updated: 2026-07-01T14:28:11.348Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-08-02T00:30:03Z

Weaknesses

CWE-20
Improper Input Validation

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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