CVE-2026-113040

Modified Modified - Updated After Analysis

Improper Input Validation in Google Chrome Proxy

Publication date: 2026-10-20

Last updated on: 2026-11-03

Assigner: Chrome

Description

Use after free in Proxy in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code outside the sandbox via crafted network traffic. (Chromium security severity: High)

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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-2026-113040

EUVD

EUVD-2026-105463

Affected Vendors & Products

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

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-416	The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
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 is an improper input validation flaw in Google Chrome's Proxy component. It allows a remote attacker to potentially execute arbitrary code within the browser's sandbox by tricking a user into visiting a specially crafted HTML page.

Detection Guidance

This vulnerability involves improper input validation in Google Chrome's Proxy component. Detection primarily requires checking the installed version of Google Chrome. If your version is prior to 156.0.8078.47, the system is vulnerable. Use commands like 'google-chrome --version' or check via package manager (e.g., 'apt list --installed | grep chrome' for Debian-based systems).

Impact Analysis

If exploited, this vulnerability could allow an attacker to run malicious code on your device, potentially stealing data, installing malware, or taking control of your browser sessions. It requires user interaction like visiting a malicious webpage.

Compliance Impact

This vulnerability allows remote attackers to execute arbitrary code inside the sandbox via crafted HTML pages. This could lead to unauthorized data access, modification, or exfiltration, which may violate GDPR (data protection) and HIPAA (health data privacy) requirements for confidentiality and integrity.

Mitigation Strategies

Update Google Chrome to version 156.0.8078.47 or later to address the vulnerability.

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