Security Information for Thunderbird

Posted at Friday, January 16, 2026

The latest version of Thunderbird has been released. These updates include fixes for vulnerabilities.

・References

Security Vulnerabilities fixed in Thunderbird 147 — Mozilla — Mozilla (https://www.mozilla.org/en-US/security/advisories/mfsa2026-04)

Security Vulnerabilities fixed in Thunderbird 147 — Mozilla (https://www.mozilla.org/en-US/security/advisories/mfsa2026-05)