Firefox 150.0.1 is out with a Facebook fix and security patches

Mozilla released point updates for its open source Firefox web browser yesterday evening. The updates are available for all three supported stable versions of the browser:

• Firefox 150.0.1
• Firefox 140.10.1 ESR
• Firefox 115.35.1 ESR

However, only the main stable release, Firefox 150.0.1 is getting bug fixes and security patches. The two extended support release versions do get the security fixes only.

Here are the fixed security issues:

• CVE-2026-7320: Information disclosure due to incorrect boundary conditions in the Audio/Video component
• CVE-2026-7322: Memory safety bugs fixed in Firefox ESR 115.35.1, Firefox ESR 140.10.1 and Firefox 150.0.1
• CVE-2026-7323: Memory safety bugs fixed in Firefox ESR 140.10.1 and Firefox 150.0.1
• CVE-2026-7324: Memory safety bugs fixed in Firefox 150.0.1

The changes in Firefox 150.0.1

Mozilla lists five non-security fixes and a change in the official release notes:

• Fixed issues accessing Facebook and other unnamed websites on systems with Bitdefender security software installed.
• Fixed an issue where a geolocation permission prompt would be shown again on a second attempt.
• Fixed an issue that prevented tabs to be added to older saved tab groups.
• Fixed a drop-down menu display issue that had them show all list items at once.
• Fixed a zooming issue on macOS and Windows that caused some borders and outlines on some page elements to disappear.

The change affects Firefox indirectly only. Mozilla increased the email masks limit of its Relay service to 50 for free users. The previous limit was five.

The new versions are available already. Most non-managed systems should get the updates automatically, but you can speed up the installation by selecting Menu > Help > About Firefox.