Security and privacy are core principles of Mozilla’s Manifesto and remain at the heart of Firefox’s development. This edition highlights key initiatives from Q3 2026 across three areas: Note: Some of the bugs linked below might not be accessible to the general public and restricted to specific work groups.
We de-restrict fixed security bugs after a grace-period, until the majority of our user population have received Firefox updates. If a link does not work for you, please accept this as a precaution for the safety of all Firefox users. Rapid Releases, Now Even Faster: Since September 2026, Firefox has followed a faster release cycle, bringing improvements, including security fixes, to users more quickly.
