Security
Waterfox 6.6.15 is a follow-up security release for Mozilla Foundation Security Advisory 2026-58.
The majority of fixes related to this advisory were already included in Waterfox 6.6.14. This release fixes up the remaining relevant issues and brings the 6.6 series fully in line with the advisory.
Coming Soon
A beta release for the next major version of Waterfox, 6.7, based on Gecko 153, will be available soon. Keep an eye out if you would like to help test the next big update before it reaches the stable channel.