MFSA2026-17: Security Vulnerabilities fixed in Thunderbird 140.8
Published Feb 24, 2026
·Updated
Security Vulnerabilities fixed in Thunderbird 140.8
Affected Software
1 affected componentFixes available
Mozilla Thunderbird<140.8
140.8
Event History
Feb 24, 2026
Advisory Published
via Mozilla·12:00 AM
Data Sourced
via Mozilla·12:00 AM
DescriptionSeverityAffected Software
Child vulnerabilities
Contains the following vulnerabilities.
- CVE-2026-2757
- CVE-2026-2758
- CVE-2026-2759
- CVE-2026-2760
- CVE-2026-2761
- CVE-2026-2762
- CVE-2026-2763
- CVE-2026-2764
- CVE-2026-2765
- CVE-2026-2766
- CVE-2026-2767
- CVE-2026-2768
- CVE-2026-2769
- CVE-2026-2770
- CVE-2026-2771
- CVE-2026-2772
- CVE-2026-2773
- CVE-2026-2774
- CVE-2026-2775
- CVE-2026-2776
- CVE-2026-2777
- CVE-2026-2778
- CVE-2026-2779
- CVE-2026-2780
- CVE-2026-2781
- CVE-2026-2782
- CVE-2026-2783
- CVE-2026-2784
- CVE-2026-2785
- CVE-2026-2786
- CVE-2026-2787
- CVE-2026-2788
- CVE-2026-2789
- CVE-2026-2790
- CVE-2026-2791
- CVE-2026-2792
- CVE-2026-2793
Frequently Asked Questions
1
What vulnerabilities are addressed in MFSA2026-17?
MFSA2026-17 addresses multiple security vulnerabilities found in Thunderbird version 140.8.
2
What is the severity of MFSA2026-17?
The severity of MFSA2026-17 varies with each vulnerability, but they are generally classified as critical to high risk.
3
How do I fix MFSA2026-17?
To fix MFSA2026-17, update your Thunderbird application to version 140.8 or later.
4
Which versions of Thunderbird are affected by MFSA2026-17?
Thunderbird versions prior to 140.8 are affected by the vulnerabilities described in MFSA2026-17.
5
Is it necessary to update to the latest version for MFSA2026-17?
Yes, it is highly recommended to update to the latest version to ensure protection against the vulnerabilities outlined in MFSA2026-17.