CVE-2026-84126
Received Received - Intake

Incorrect Boundary Conditions in Firefox Layout Grid Component

Publication date: 2026-09-01

Last updated on: 2026-09-01

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the Layout: Grid component. This vulnerability was fixed in Firefox 155.

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Meta Information

Published
2026-09-01
Last Modified
2026-09-01
Generated
2026-09-01
AI Q&A
2026-09-01
EPSS Evaluated
N/A
NVD
CVE-2026-84126
EUVD
EUVD-2026-69075

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 155

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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 vulnerability involves incorrect boundary conditions in the Layout: Grid component of Firefox. It was patched in Firefox version 155. The issue likely allows unexpected behavior or crashes due to improper handling of grid layout boundaries.

Impact Analysis

If exploited, this flaw could cause Firefox to crash or behave unpredictably when rendering grid layouts. Users might experience application instability or denial of service when visiting maliciously crafted web pages.

Mitigation Strategies

Update Firefox to version 155 or later to address the incorrect boundary conditions in the Layout: Grid component.

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