CVE-2026-16388
Received Received - Intake

DOM Sandbox Escape in Firefox Networking

Publication date: 2026-07-21

Last updated on: 2026-07-21

Assigner: Mozilla Corporation

Description
Sandbox escape in the DOM: Networking component. This vulnerability was fixed in Firefox 153.

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Meta Information

Published
2026-07-21
Last Modified
2026-07-21
Generated
2026-07-21
AI Q&A
2026-07-21
EPSS Evaluated
N/A
NVD
CVE-2026-16388
EUVD
EUVD-2026-46225

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 153

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a sandbox escape vulnerability in Firefox's DOM Networking component. It allows malicious code to break out of the browser's security sandbox, potentially gaining access to system resources or other sensitive data.

Impact Analysis

If exploited, this vulnerability could allow an attacker to execute arbitrary code on your system, steal sensitive information, or perform actions outside the browser's intended security boundaries. Users of affected Firefox versions are at risk until they update.

Mitigation Strategies

Update Firefox to version 153 or later to address the sandbox escape vulnerability in the DOM Networking component.

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