Use After Free in Google Chrome V8

Publication date: 2026-08-06

Last updated on: 2026-08-06

Assigner: Chrome

Description

Use after free in V8 in Google Chrome prior to 151.0.7922.109 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

2026-08-06

Last Modified

2026-08-06

Generated

2026-08-07

AI Q&A

2026-08-07

EPSS Evaluated

N/A

NVD

CVE-2026-19151

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.109 (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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 flaw and execute code within a sandboxed environment.

Impact Analysis

If exploited, this vulnerability could allow an attacker to run arbitrary code on your system through a malicious webpage. Since it occurs within a sandbox, the impact is somewhat limited, but successful exploitation could still lead to data theft, installation of malware, or unauthorized system access depending on the attacker's goals.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.109 or later to address the use-after-free vulnerability in V8.

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