CVE-2026-17947

Analyzed Analyzed - Analysis Complete

Use After Free in WebSockets in Google Chrome

Publication date: 2026-07-30

Last updated on: 2026-08-03

Assigner: Chrome

Description

Use after free in WebSockets in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-07-30

Last Modified

2026-08-03

Generated

2026-08-19

AI Q&A

2026-07-30

EPSS Evaluated

2026-08-18

NVD

CVE-2026-17947

EUVD

EUVD-2026-50873

Affected Vendors & Products

Vendor	Product	Version / Range
google	chrome	to 151.0.7922.72 (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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 WebSockets within Google Chrome versions before 151.0.7922.72. It allows a remote attacker to potentially escape the browser sandbox by exploiting a crafted HTML page.

Detection Guidance

This vulnerability is specific to Google Chrome versions prior to 151.0.7922.72. To detect it, check your Chrome version by running chrome --version or chrome://version in the browser. If your version is below 151.0.7922.72, the system is vulnerable.

Impact Analysis

An attacker could exploit this to perform unauthorized actions on your system, such as accessing sensitive data or executing malicious code, due to the sandbox escape capability.

Compliance Impact

This vulnerability involves a use-after-free issue in WebSockets in Google Chrome, which could allow a remote attacker to perform a sandbox escape via a crafted HTML page. While this does not directly impact compliance with standards like GDPR or HIPAA, such vulnerabilities may pose risks to data confidentiality and integrity if exploited, potentially leading to unauthorized access or data breaches.

Mitigation Strategies

Update Google Chrome to version 151.0.7922.72 or later to address the use after free vulnerability in WebSockets.

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