CVE-2026-109735: Use-after-free in the DOM: Animation component

Published Oct 13, 2026
·
Updated

Use-after-free in the DOM: Animation component. This vulnerability was fixed in Firefox 158.

Affected Software

1 affected componentFixes available
Mozilla Firefox<158
158

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 158
  2. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 158

Event History

Oct 13, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
CVE Published
via MITRE·12:29 PM
Data Sourced
via MITRE·12:29 PM
Description
Data Sourced
via NVD·01:17 PM
DescriptionSeverityWeakness

Parent advisories

This vulnerability appears in the following advisories.

Frequently Asked Questions

1

Who can trigger this issue?

The CVSS vector indicates it can be triggered remotely over the network without privileges, but user interaction is required. A user would need to interact with attacker-controlled content, such as a web page.

2

What is the potential impact?

The vulnerability has low confidentiality and integrity impact and no availability impact according to the supplied CVSS vector. It is rated medium severity with a CVSS 3.1 score of 5.4.

3

Which Firefox versions should be remediated?

The issue was fixed in Firefox 158. The provided data does not identify the affected version range, so deployments should verify whether they are running a version that includes this fix.

Contact

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