Disable AppArmor for Firefox to ensure the Firefox extension can connect to KeepassXC:.Sudo add-apt-repository ppa:mozillateam/ppa If you are using unattended-upgrades you also need to run the following to ensure unattended-upgrades takes the Mozilla PPA into account:Įcho 'Unattended-Upgrade::Allowed-Origins:: 'LP-PPA-mozillateam:$' ' | sudo tee /etc/apt//51unattended-upgrades-firefox ' | sudo tee /etc/apt/preferences.d/mozilla-firefox

We need to ensure that packages from Mozilla's PPA have higher priority (otherwise apt might 'upgrade' to the Snap again).

Ubuntu provides a transitional firefox Debian package which installs the Snap.This isn't pretty but the following approach worked for me: The KeePassXC Troubleshooting guide recommends installing the browser from the official PPA. While work on a solution is in progress, all we can do is work around this issue (or switch to a distro which still provides browsers as regular packages like Debian). Unfortunately this issue can't be fixed on KeePassXC's end and so far neither Flatpak nor Snap support NativeMessaging, yet (their sandboxing techniques prevent the browser extension from talking to the KeePassXC process). There is also a German article by Heise Online with a step-by-step guide on how to get this going - in case you want to give it a try. Beware that this is pretty fresh - the code hasn't been merged upstream, yet, so don't expect this to be production-ready. I would love to see it as an privacy by design and default enabled, build in plugin, that secures my future browsing behaviour out of the box, after installing & running Epiphany as my primary web browser.Update: Native messaging support in the Firefox snap is now available as beta. It already works with Firefox & Chrome/Chromium and is mentioned by the Electronic Frontier Foundation (EFF) in their 'Surveillance Self-Defense(SSD)' guide

'KeePassXC is a feature-rich, fully cross-platform and modern open-source password manager.' Guess the KeePassXC developement team would love to support your implementation if you just ask them! This could be solved by adding privacy by design support for KeePassXC-Browser in Epiphany. I just want to make my browsing behaviour more secure and sustainable.

Keepassxc browser plugin