MFSA2026-16: Security Vulnerabilities fixed in Thunderbird 148
Published Feb 24, 2026
·Updated
Security Vulnerabilities fixed in Thunderbird 148
Affected Software
1 affected componentFixes available
Mozilla Thunderbird<148
148
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-2026-2795
- CVE-2026-2760
- CVE-2026-2761
- CVE-2026-2762
- CVE-2026-2763
- CVE-2026-2764
- CVE-2026-2796
- CVE-2026-2797
- CVE-2026-2765
- CVE-2026-2766
- CVE-2026-2767
- CVE-2026-2768
- CVE-2026-2798
- CVE-2026-2769
- CVE-2026-2799
- 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-2026-2800
- CVE-2026-2780
- CVE-2026-2781
- CVE-2026-2801
- CVE-2026-2782
- CVE-2026-2783
- CVE-2026-2802
- CVE-2026-2803
- CVE-2026-2784
- CVE-2026-2785
- CVE-2026-2804
- CVE-2026-2786
- CVE-2026-2805
- CVE-2026-2787
- CVE-2026-2788
- CVE-2026-2789
- CVE-2026-2806
- CVE-2026-2790
- CVE-2026-2791
- CVE-2026-2807
- CVE-2026-2792
- CVE-2026-2793
Frequently Asked Questions
1
What security vulnerabilities does MFSA2026-16 address?
MFSA2026-16 addresses multiple security vulnerabilities found in Thunderbird version 148.
2
What versions of Thunderbird are affected by MFSA2026-16?
Thunderbird versions prior to 148 are affected by the vulnerabilities addressed in MFSA2026-16.
3
How do I update Thunderbird to fix the vulnerabilities in MFSA2026-16?
You can update Thunderbird to version 148 or later to resolve the issues outlined in MFSA2026-16.
4
What is the impact of not addressing the vulnerabilities in MFSA2026-16?
Failing to address the vulnerabilities in MFSA2026-16 may expose users to potential security risks, including data breaches.
5
Is it necessary to restart Thunderbird after applying the fix for MFSA2026-16?
Yes, it is recommended to restart Thunderbird to ensure that the security fixes from MFSA2026-16 are implemented.