MFSA2026-47: Security Vulnerabilities fixed in Firefox ESR 115.36

Published May 19, 2026
·
Updated

Security Vulnerabilities fixed in Firefox ESR 115.36

Affected Software

1 affected componentFixes available
Mozilla Firefox ESR<115.36
115.36

Event History

May 19, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
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Frequently Asked Questions

1

What is the severity of MFSA2026-47?

The severity of MFSA2026-47 is classified as high with a score of 7.

2

What vulnerabilities are addressed in MFSA2026-47?

MFSA2026-47 addresses multiple security vulnerabilities in Mozilla Firefox ESR 115.36.

3

How do I fix MFSA2026-47?

To fix MFSA2026-47, you should update your Mozilla Firefox ESR to version 115.36 or later.

4

When was MFSA2026-47 published?

MFSA2026-47 was published on May 19, 2026.

5

Which software is affected by MFSA2026-47?

The security vulnerabilities described in MFSA2026-47 affect Mozilla Firefox ESR.

Contact

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MFSA2026-47 - Security Vulnerabilities fixed in Firefox ESR 115.36 - SecAlerts