CVE-2026-117960
Received Received - Intake

DOM Spoofing in Firefox

Publication date: 2026-10-27

Last updated on: 2026-10-27

Assigner: Mozilla Corporation

Description
Spoofing issue in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 159 and Firefox ESR 153.6.

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Meta Information

Published
2026-10-27
Last Modified
2026-10-27
Generated
2026-10-27
AI Q&A
2026-10-27
EPSS Evaluated
N/A
NVD
CVE-2026-117960
EUVD
EUVD-2026-110991

Affected Vendors & Products

Currently, no data is known.

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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 spoofing vulnerability in the DOM Core and HTML components of Firefox. It allows an attacker to deceive users by manipulating the appearance of web content, potentially tricking them into interacting with malicious elements.

Detection Guidance

I don't know

Detection requires checking Firefox version. Run: firefox --version. If version is below 159 or Firefox ESR below 153.6, the system is vulnerable.

Impact Analysis

An attacker could exploit this to impersonate legitimate websites or UI elements, leading to phishing attacks, credential theft, or unauthorized actions on your behalf if you visit a compromised site.

Mitigation Strategies

Update Firefox to version 159 or later. For ESR users, update to Firefox ESR 153.6 or later. Disable automatic updates temporarily if needed.

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