New Update Firefox Stable Release

[Spiff]

Firefox 138.0.4
https://www.mozilla.org/en-US/firefox/138.0.4/releasenotes/
-->
Security fixes
https://www.mozilla.org/en-US/security/advisories/mfsa2025-36/

---

Firefox ESR 128.10.1
https://www.mozilla.org/en-US/firefox/128.10.1/releasenotes/
-->
Security fixes
https://www.mozilla.org/en-US/security/advisories/mfsa2025-37/

---

Firefox ESR 115.23.1
https://www.mozilla.org/en-US/firefox/115.23.1/releasenotes/
-->
Security fixes
https://www.mozilla.org/en-US/security/advisories/mfsa2025-38/

 

[silversurfer]

Firefox 139.0 official release today:

Firefox 139.0, See All New Features, Updates and Fixes

www.mozilla.org

Firefox 139 Web Browser Is Now Available for Download, Here's What's New - 9to5Linux

Firefox 139 open-source web browser is now available for download with full-page translations within Firefox extension pages.

9to5linux.com

 

[Sorrento]

@silversurfer: Thanks for this & all your many update tips, it really is appreciated

 

[HarborFront]

Just updated

 

[silversurfer]

Firefox 139.0.1 released:

Fixed graphics corruption with certain NVIDIA graphics adapters and multiple monitors running at mixed refresh rates after updating to Firefox 139. (Bug 1968876)

Firefox 139.0.1, See All New Features, Updates and Fixes

www.mozilla.org

 

[HarborFront]

Just updated

 

[silversurfer]

FYI, Firefox 139.0.4 official release later today...

• Fixed Firefox freezing when switching between apps or opening certain panels within the browser. (Bug 1969253 & Bug 1969346)
• Fixed difficult selection of drop-down menu options in the Firefox preferences page when selected via the in-page search. (Bug 19689)
• Fixed various selection issues when triple-clicking text in some situations. (Bug 1969100 & Bug 1969432)
• Fixed an incorrect filename being used when setting an image as the desktop wallpaper on Windows. (Bug 1969793)
• Various security fixes.

Firefox 139.0.4, See All New Features, Updates and Fixes

www.mozilla.org

 

[HarborFront]

Just updated

 

[silversurfer]

Mozilla Firefox recently received a long-anticipated feature: vertical tabs. It arrived in March 2025 as part of the Firefox 136 update. Now, Mozilla is introducing another welcome improvement to tab management in its browser, making it easier for users to pin and unpin tabs in Firefox.

With the latest Firefox Nightly update, Mozilla implemented a new way to pin or unpin tabs: you can simply drag the current page to another pinned tab to pin or drag it out to unpin it. As simple as that. The new logic works with both vertical and horizontal tab views, and it eliminates the need to use context menus. The only prerequisite is that you need to have at least one pinned tab for the dragging to work. Otherwise, you will simply move the tab across the strip.

It is nice to see Firefox implementing this small convenience for customers. However, some argue that there is still room for improvement. Dragging tabs is cool, but a dedicated shortcut could be an even better and quicker way to pin or unpin your tabs. That said, other mainstream browsers lack this feature as well.

Firefox gets new way to pin and unpin tabs

Mozilla is working on a welcome change that will make it easier to pin and unpin tabs in the Firefox browser. The best part is that you can try it now.

www.neowin.net

 

[silversurfer]

Firefox 140.0 official release tomorrow...

Highlights of Firefox 140 include a new Unload Tab feature that lets you unload tabs by right-clicking on a tab (or multiple selected tabs) to reduce Firefox’s memory and CPU usage, support for adding custom search engines in Search settings, and support for keeping more or fewer pinned vertical tabs in view.

For Android users, Firefox 140 adds a “Select All” option for bookmarks. Of course, as you have noticed, Firefox 140 is an ESR (Extended Support Release) version, which means that it will be supported for the next couple of years with security fixes through regular point releases.

Firefox 140 ESR Web Browser Is Now Available for Download, This Is What's New - 9to5Linux

Firefox 140 open-source web browser is now available for download as the next ESR (Extended Support Release) series. Here’s what's new!

9to5linux.com

 

[HarborFront]

Just updated

 

[Zartarra]

After the update I had an issue with Firefox. I could not start it. To solve the problem I had to turn off the exploit protection setting "Validate handle usage". Never had that issue before with the other versions.

 

[silversurfer]

Firefox 140.0.1 released, bug fixes:

• Fixed text contrast issues in the sidebar with some dark themes. (Bug 1971487)
• Fixed a startup crash experienced by some users caused by DLL injection. (Bug 1973947)

Firefox 140.0.1, See All New Features, Updates and Fixes

www.mozilla.org

 

[Zartarra]

Mmmmh I still have the same issue with FF when I enable Validate handle usage again. Time to do some more tests.

 

[HarborFront]

Just updated

 

[silversurfer]

Firefox 140.0.2

Fixed a startup crash on Windows experienced by some users. (Bug 1974259)

Firefox 140.0.2, See All New Features, Updates and Fixes

www.mozilla.org

 

[nicolaasjan]

Firefox 140.0.2

Just saw it offered on Linux Mint.

 

[HarborFront]

Just updated

 

[Zartarra]

Firefox 140.0.2

Firefox 140.0.2, See All New Features, Updates and Fixes

www.mozilla.org

This update solves the issue with the exploit protection setting.

 

[silversurfer]

FYI, Firefox 140.0.4 official release coming soon, once more bug fixes:

• Fixed incorrect font selection in some cases when attempting to use color fonts. (Bug 1971053)
• Fixed the search results not updating when switching source during a file search in the Developer Tool's debugger. (Bug 1971094)

Firefox 140.0.4, See All New Features, Updates and Fixes

www.mozilla.org