MFSA2026-33: Security Vulnerabilities fixed in Thunderbird 150

Published Apr 21, 2026
·
Updated

Security Vulnerabilities fixed in Thunderbird 150

Affected Software

1 affected componentFixes available
Mozilla Thunderbird<150
150

Event History

Apr 21, 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 MFSA2026-33?

The severity of MFSA2026-33 varies depending on the specific vulnerabilities addressed, but it generally contains important security fixes.

2

How do I fix MFSA2026-33?

To fix MFSA2026-33, users should update their Mozilla Thunderbird to version 150 or later.

3

What vulnerabilities are addressed in MFSA2026-33?

MFSA2026-33 addresses multiple security vulnerabilities found in versions of Mozilla Thunderbird prior to 150.

4

Who is affected by MFSA2026-33?

Users of Mozilla Thunderbird versions up to but not including 150 are affected by MFSA2026-33.

5

Is there a workaround for MFSA2026-33?

There are no specific workarounds for MFSA2026-33; updating to the latest version is recommended.

Contact

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