CVE-2026-92077

Received Received - Intake

Denial-of-Service in Firefox SVG Component

Publication date: 2026-09-15

Last updated on: 2026-09-20

Assigner: Mozilla Corporation

Description

Denial-of-service in the SVG component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, and Thunderbird 156.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-09-15

Last Modified

2026-09-20

Generated

2026-10-05

AI Q&A

2026-09-15

EPSS Evaluated

2026-10-04

NVD

CVE-2026-92077

EUVD

EUVD-2026-78462

Affected Vendors & Products

Vendor	Product	Version / Range
mozilla	firefox	156
mozilla	firefox_esr	153.3

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-770	The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

Attack-Flow Graph

Executive Summary

This is a denial-of-service vulnerability in the SVG component of Firefox and Firefox ESR. It was patched in Firefox 156 and Firefox ESR 153.3.

Detection Guidance

Detection requires checking Firefox version. Run 'firefox --version' or check 'about:support' in Firefox. Versions before 156 or Firefox ESR before 153.3 are vulnerable.

Impact Analysis

An attacker could exploit this flaw to crash the affected browser by triggering the SVG component, leading to service disruption or application unavailability.

Compliance Impact

The provided CVE data does not specify how this vulnerability impacts compliance with standards like GDPR or HIPAA. The vulnerability is a denial-of-service in the SVG component of Firefox, which may disrupt services but lacks details on regulatory implications.

Mitigation Strategies

Update Firefox to version 156 or later and Firefox ESR to 153.3 or later. Disable SVG rendering if updates are not immediately possible.

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