CVE-2026-113231

Modified Modified - Updated After Analysis

Improper Input Validation in Google Chrome Extensions

Publication date: 2026-10-20

Last updated on: 2026-11-03

Assigner: Chrome

Description

Missing authorization in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker leveraging social engineering to obtain sensitive information via a crafted Chrome extension. (Chromium security severity: Medium)

CVSS Scores

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Meta Information

Published

2026-10-20

Last Modified

2026-11-03

Generated

2026-11-10

AI Q&A

2026-10-21

EPSS Evaluated

2026-11-08

NVD

CVE-2026-113231

EUVD

EUVD-2026-105478

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 156.0.8078.47 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
CWE-20	The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Attack-Flow Graph

Executive Summary

This vulnerability involves improper input validation in Google Chrome's Extensions feature. A remote attacker could exploit this by crafting a malicious HTML page to potentially execute arbitrary code within the browser's sandbox environment.

Detection Guidance

This vulnerability involves improper input validation in Google Chrome's Extensions. Detection primarily requires checking the installed Chrome version and monitoring for suspicious activity. Use chrome://version/ to verify the version. If it is below 156.0.8078.47, the system is vulnerable. Additionally, inspect installed extensions for untrusted or recently added ones via chrome://extensions/. No direct command-line detection is specified.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your device through a specially designed webpage. This could lead to unauthorized access to sensitive data, installation of malware, or other malicious activities while bypassing normal security restrictions.

Compliance Impact

This vulnerability involves improper input validation leading to potential arbitrary code execution inside a sandbox. While not directly tied to compliance standards like GDPR or HIPAA, such vulnerabilities could indirectly impact compliance by enabling data breaches or unauthorized access to sensitive information if exploited.

Mitigation Strategies

Update Google Chrome to version 156.0.8078.47 or later to address the improper input validation flaw.

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