CVE-2026-113399

Incorrect boundary conditions in the SVG component

Published Oct 20, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Weaknesses CWE-20
CWE-680
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-190
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Type Values Removed Values Added
Weaknesses CWE-20
CWE-680
Type Values Removed Values Added
Weaknesses CWE-178
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1. Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1 and Thunderbird 158.0.1.
References
Type Values Removed Values Added
Weaknesses CWE-178
Type Values Removed Values Added
Description Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158.0.1.
Title Incorrect boundary conditions in the SVG component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Oct 29, 2026, 5:44 PM
Reserved
Oct 20, 2026, 6:00 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 1:16 PM
Modified
Oct 29, 2026, 6:17 PM