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March 24, 2026 6.6.10 - Discord compatibility and security fixes
Security
- Fixed multiple security vulnerabilities as described in Mozilla Foundation Security Advisory 2026-22.
Changes
- Backported the fix for Bug 1969603, resolving a recursive deadlock in
RTCRtpScriptTransform. This fix is needed for Discord and should restore voice and video functionality. - Added a Discord specific user agent override that reports Waterfox as Firefox 149, which should help keep Discord voice and video working correctly.
Contributors
- Thanks to @goodusername123 for submitting the backport PR included in this release.