Firefox 148.0.2 fixes YouTube bugs, poor video quality on NVIDIA GPUs, and more

A new version of Firefox is here with some quality-of-life improvements that fix issues with YouTube, poor video quality on PCs with NVIDIA cards, and more.

Mozilla has fully released a new bug-fixing update for the Firefox browser. While it is not the biggest update out there (do not expect the recently showcased redesign in today's update), it brings some useful quality-of-life improvements.

Firefox 148.0.2 is now available for download from the official website and on existing installations. Its changelog contains fixes for bugs with YouTube autoplay, video quality regression on PCs with NVIDIA graphics cards (a new display driver is out too), some bugs with search, and more.

Here is the complete changelog:

• Fixed an issue where searches entered in the Firefox Home search field were incorrectly redirected to the address bar for some users who had disabled search handoff behavior via advanced settings.
• Fixed an issue where some web-based rich text editors stopped applying formatting, such as bold or italic.
• Fixed an issue where videos could autoplay unexpectedly on YouTube despite autoplay being blocked, particularly impacting screen reader users.
• Fixed an issue that caused some absolutely positioned elements meant to be centered, for example, using margin: auto with inset: 0, to appear left-aligned on initial load.
• Fixed an issue where the “Switch to Tab” suggestion in the address bar appeared blank for pages without a title.
• Fixed an issue that could reduce video quality on Windows systems using NVIDIA GPUs with Video Super Resolution enabled.

In addition to that, Mozilla resolved three security vulnerabilities, particularly "CVE-2026-3845: Heap buffer overflow in the Audio/Video: Playback component in Firefox for Android," "CVE-2026-3846: Same-origin policy bypass in the CSS Parsing and Computation component," and "CVE-2026-3847: Memory safety bugs fixed in Firefox 148.0.2." All three vulnerabilities are of high risk, so update to the latest version as quickly as possible.

You can download the browser from the official website, the Microsoft Store (Windows 10 and 11), or Neowin's Software page. Full release notes are available here.

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Posted Wednesday 11 March 2026 at 5:22 am AEST (my time).

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