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 inside Chrome extensions allows an attacker to trick users into interacting with spoofed user interfaces, creating a risk of social engineering and data compromise. The flaw is a classic input validation weakness20. A malicious extension UI elements that mimic legitimate browser prompts or other interface components.

Affected Systems

Google Chrome versions prior to 150.0.7871.47 are affected. Based on the description, it is inferred that the issue exists on the stable channel across all platforms where user‑approved explicitly state the distribution channels or operating systems impacted.

Risk and Exploitability

The CVSS score is 4.3, indicating moderate risk, and the EPSS score of less than 1% points to 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, after which the extension can present spoofed UI elements. Updating to Chrome 150.0.7871.47 or later mitigates the flaw.

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	—

Found an issue or want to improve our Enrichment? You can suggest it directly by opening an issue on our dedicated GitHub repository .

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

Install the latest Chrome update (150.0.7871.47 or newer).
Remove any extensions that were installed before the update and cannot be verified as trustworthy.
Configure your Chrome policy to restrict extension installation to the Chrome Web Store only or to extensions signed with a trusted certificate; in managed environments use Extension Management to block untrusted extensions.

Generated by OpenCVE AI on July 15, 2026 at 23:39 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

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: 2026-07-15T23:45:16Z

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

JSON object

JSON object

JSON object

JSON object

JSON object