MFSA2026-102: Security Vulnerabilities fixed in Thunderbird 140.17

Published Sep 30, 2026
·
Updated

Security Vulnerabilities fixed in Thunderbird 140.17

Affected Software

1 affected componentFixes available
Mozilla Thunderbird<140.17
140.17

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 140.17
  2. Upgrade

    Upgrade Thunderbird to a version that resolves this vulnerability.

    Fixed in 140.17

Event History

Sep 30, 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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