CVE-2026-118027: Frame poisoning in the Layout component

Published Oct 27, 2026
·
Updated

Frame poisoning in the Layout component. This vulnerability was fixed in Firefox ESR 115.44.

Affected Software

1 affected componentFixes available
Mozilla Firefox ESR<115.44
115.44

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 115.44
  2. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 115.44

Event History

Oct 27, 2026
CVE Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
CVE Published
via MITRE·02:06 PM
Data Sourced
via MITRE·02:06 PM
Description

Parent advisories

This vulnerability appears in the following advisories.

Peer vulnerabilities

Found alongside the following vulnerabilities.

Frequently Asked Questions

1

Which Firefox ESR release includes the fix?

The issue was fixed in Firefox ESR 115.44.

Company

Resources

Contact

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