Security Information for Firefox, Thunderbird

Posted at Tuesday, February 17, 2026

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

References

Security Vulnerabilities fixed in Firefox 147.0.2 — Mozilla (https://www.mozilla.org/en-US/security/advisories/mfsa2026-06/)

Security Vulnerabilities fixed in Thunderbird 147.0.2 and 140.7.2 — Mozilla (https://www.mozilla.org/en-US/security/advisories/mfsa2026-11/)