CVE-2026-19556

Analyzed Analyzed - Analysis Complete

Use After Free in Google Chrome V8 Engine

Publication date: 2026-08-11

Last updated on: 2026-08-17

Assigner: Chrome

Description

Use after free in V8 in Google Chrome prior to 151.0.7922.137 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: High)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-11

Last Modified

2026-08-17

Generated

2026-09-01

AI Q&A

2026-08-12

EPSS Evaluated

2026-08-30

NVD

CVE-2026-19556

EUVD

EUVD-2026-56983

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.137 (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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

Attack-Flow Graph

Executive Summary

This is a use-after-free vulnerability in V8, the JavaScript engine used by Google Chrome. A use-after-free occurs when a program continues to use a pointer after the memory it points to has been freed, potentially leading to arbitrary code execution. In this case, a remote attacker could exploit this by crafting a malicious HTML page to trigger the issue and execute code within a sandboxed environment.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 151.0.7922.137. Detection involves checking the installed Chrome version. On Windows, run: chrome://settings/help. On Linux, check via terminal: google-chrome --version. If the version is below 151.0.7922.137, the system is vulnerable.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run arbitrary code on your system through a specially crafted webpage. Since it occurs in a sandboxed environment, the impact is limited to code execution within that sandbox. However, this could still lead to data theft, installation of malware, or further compromise of your system depending on the attacker's goals.

Compliance Impact

This vulnerability does not provide specific details about compliance impacts on standards like GDPR or HIPAA. The issue involves a use-after-free in V8 in Google Chrome, which could allow remote code execution inside a sandbox via a crafted HTML page. Without explicit information on data exposure or processing, direct compliance implications cannot be determined.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.137 or later to address the use after free vulnerability in V8.

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