Firefox 150.0.1 is out with important security fixes, higher limits for Relay, and bug fixes

Mozilla Firefox 150.0.1 is now available for download with a bunch of fixes for drop-downs, zooming, compatibility with Bitdefender, and more.

Mozilla has released Firefox 150.0.1 with a few fixes for the recent major update, version 150. As usual, this maintenance update fixes various bugs, but there is one notable change, particularly for Relay users.

Fixes in Firefox 150.0.1 include patches for issues on various popular websites for Bitdefender users, bugs with repetitive location permission prompts, bugged drop-down menus, zooming issues, and more. Additionally, if you use Firefox Relay, you can now create up to 50 email masks, which is ten times more than the previous limit of five masks. This limit is now available for users on the free tier, while those paying for Mozilla Firefox Relay get an unlimited number of email masks. For reference, Firefox Relay is available for $0.99 / month (billed annually) or $1.99 / month (billed monthly).

Finally, Firefox 150.0.1 includes security fixes for memory-related vulnerabilities. Five vulnerabilities are marked as high-severity, while one is flagged as critical.

Here is the full changelog:

• Fixed an issue where Facebook and other websites might not load properly for users with Bitdefender security software installed. (Bug 2034178)

• Fixed an issue where denying a geolocation permission prompt could cause Firefox to show the system permission dialog again on a second attempt. (Bug 2034120)

• Fixed an issue that prevented tabs from being added to some older saved tab groups. (Bug 2031961)

• Fixed a layout issue where some drop-down menus expanded to display all list items at once. (Bug 2033117)

• Fixed an issue where borders and outlines on some page elements disappeared when pinch zooming or smart zooming on macOS and Windows. (Bug 2030043)

• All Relay users can now create up to 50 email masks—an increase from the previous limit of 5.

Full release notes for Firefox 150.0.1 are available here, while the list of patched security vulnerabilities is available here. To update your browser right here and right now, head to Menu > Help > About Firefox.

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Posted Wednesday 29 April 2026 at 7:38 am AEST (my time).

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