MFSA2026-112: Security Vulnerabilities fixed in Firefox ESR 153.5.1

Published Oct 20, 2026
·
Updated

Security Vulnerabilities fixed in Firefox ESR 153.5.1

Affected Software

1 affected componentFixes available
Mozilla Firefox ESR<153.5.1
153.5.1

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 153.5.1
  2. Upgrade

    Upgrade Firefox ESR to a version that resolves this vulnerability.

    Fixed in 153.5.1

Event History

Oct 20, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

Company

Resources

Contact

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