CVE-2026-19558

Analyzed Analyzed - Analysis Complete

Use After Free in Google Chrome Extensions

Publication date: 2026-08-11

Last updated on: 2026-08-17

Assigner: Chrome

Description

Use after free in Extensions in Google Chrome prior to 151.0.7922.137 allowed an attacker who convinced a user to install a malicious extension to execute arbitrary code inside a sandbox via a crafted Chrome Extension. (Chromium security severity: High)

CVSS Scores

EPSS Scores

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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-2026-19558

EUVD

EUVD-2026-56985

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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 vulnerability is a use-after-free issue in Google Chrome's Extensions feature. It allows an attacker who tricks a user into installing a malicious extension to execute arbitrary code within a sandbox. The flaw exists in Chrome versions prior to 151.0.7922.137.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 151.0.7922.137 and involves a use-after-free issue in Extensions. Detection requires checking Chrome version and reviewing installed extensions for malicious activity. No direct network detection commands are available from provided context.

Impact Analysis

If you install a malicious extension, an attacker could exploit this to run arbitrary code on your system, potentially stealing data, installing malware, or taking control of your browser. Even sandboxed execution could lead to serious security breaches.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR (data protection) and HIPAA (health data privacy). Organizations may face compliance penalties if user data is compromised due to this flaw.

Mitigation Strategies

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

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