CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component

Published Oct 13, 2026
·
Updated

Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.

Affected Software

2 affected componentsFixes available
Mozilla Firefox<158
158
Mozilla Firefox ESR<153.5
153.5

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

    Fixed in 153.5
  3. Upgrade

    Upgrade Firefox to a version that resolves this vulnerability.

    Fixed in 158
  4. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 153.5

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.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

What user interaction is required for exploitation?

The CVSS vector indicates that user interaction is required. An attacker would need a user to interact with attacker-controlled content, such as by visiting or engaging with a malicious page.

2

Can this be exploited remotely without prior access?

The vulnerability is network-reachable and requires no privileges, according to the CVSS vector. However, exploitation still requires user interaction.

3

Which Firefox releases contain the fix?

Mozilla fixed the issue in Firefox 158 and Firefox ESR 153.5. Systems running those fixed releases are not affected by this vulnerability.

Company

Resources

Contact

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