MFSA2026-36: Security Vulnerabilities fixed in Firefox ESR 140.10.1

Published Apr 28, 2026
·
Updated

Security Vulnerabilities fixed in Firefox ESR 140.10.1

Affected Software

1 affected componentFixes available
Mozilla Firefox ESR<140.10.1
140.10.1

Event History

Apr 28, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software

Child vulnerabilities

Contains the following vulnerabilities.

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Frequently Asked Questions

1

What security vulnerabilities are addressed in MFSA2026-36?

MFSA2026-36 addresses multiple security vulnerabilities fixed in Firefox ESR 140.10.1.

2

How do I update Firefox ESR to address MFSA2026-36?

To address MFSA2026-36, update your Firefox ESR to version 140.10.1.

3

What versions are affected by MFSA2026-36?

Firefox ESR versions prior to 140.10.1 are affected by MFSA2026-36.

4

Is it mandatory to fix MFSA2026-36?

It is highly recommended to fix MFSA2026-36 to protect against potential security threats.

5

Where can I find more details about MFSA2026-36?

For more details about MFSA2026-36, please refer to the Mozilla security advisory.

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