Open the ext+container link with Open URL in a container? pop-up

[SpaceClicker]

I've had a couple bookmarks that open different websites in a specific container. Up until now, when I selected the bookmark, it would just open the site in the specified container.

Example of one of the bookmarks:

ext+container:name=hotmail&url=https://hotmail.com/

Now, when I select the bookmark, it pops up a window asking for confirmation that you want to open the site. It asks "Open the ext+container link with Open URL in a container?" with an "Open link" and "Cancel" button.

I assume this is something new in the latest browser update, as this add-on does not appear to have changed in a while (unless I changed some setting inadvertently).

Is there any way to get rid of this pop-up? Perhaps a setting in Firefox, or maybe an update to this add-on?

Thanks

[macht]

Encountering the same issue. This is likely related to fixes in Firefox v121 addressing CVE-2023-6871: "Lack of protocol handler warning in some instances".

• https://www.mozilla.org/en-US/security/advisories/mfsa2023-56/#CVE-2023-6871
• https://bugzilla.mozilla.org/show_bug.cgi?id=1828334

[SpaceClicker]

I figured it was a security change in Firefox. I wonder if there is a way to whitelist certain protocol handlers.

[egbertvanderhout]

What seems to work:

• Open about:config
• Add boolean network.protocol-handler.external.ext+container with value true
• No dialog 🥳

[SpaceClicker]

What seems to work:

* Open `about:config`

* Add boolean `network.protocol-handler.external.ext+container` with value `true`

* No dialog 🥳

Nice! This works!

Thanks!

[atensoftware]

Can this setting be added by the extension when the extension is installed? Or, perhaps it could be an option in the extension's settings panel?