Firefox 147.0.2 Update Brings Custom Keyboard Shortcuts, Security Fixes, and Linux Improvements

Mozilla has released the Firefox 147.0.2 update, adding native controls to customize keyboard shortcuts along with important security and stability fixes. The release improves productivity, strengthens protection against vulnerabilities, enhances Linux reliability, and refines Safe Browsing accuracy for everyday browsing.

Custom Keyboard Shortcuts Arrive in Firefox

One of the biggest additions in Firefox 147.0.2 is the ability to customize keyboard shortcuts directly inside the browser.

Users can now:

• Replace hard-to-reach or confusing shortcuts
• Eliminate conflicts with other software
• Build a shortcut layout that matches personal workflow and accessibility needs

To try the feature:

1. Open Firefox.
2. Type about:keyboard in the address bar.
3. Customize shortcuts using the experimental interface.

Mozilla designed this feature as a first-generation prototype so it can evolve based on user feedback. At launch, it works best with English (US) QWERTY keyboards and is currently available only on desktop (Windows, macOS, and Linux). Mobile platforms do not yet support shortcut customization.

This update makes Firefox more flexible for power users, developers, and accessibility-focused workflows.

High-Impact Security Vulnerabilities Patched

Firefox 147.0.2 fixes multiple security vulnerabilities rated high impact under Mozilla Foundation Security Advisory 2026-06.

Key security fixes include:

CVE-2026-24868 – Anti-Tracking Mitigation Bypass

• A flaw in Firefox’s Privacy Anti-Tracking component could allow mitigation bypass under certain conditions.

CVE-2026-24869 – Use-After-Free Memory Issue

• A memory handling bug in layout scrolling and overflow components could lead to crashes or potential exploitation.

Mozilla strongly recommends installing the update to reduce exposure to these risks.

Linux Reliability Improvements

Mozilla resolved an issue affecting Linux systems that use XDG Base Directories. Some users experienced missing translations and restricted browser functionality when Firefox profiles lived under newer directory structures.

See also: Microsoft Releases Patch for Office Zero-Day CVE-2026-21509

Firefox 147.0.2 restores proper access permissions and eliminates sandbox conflicts, improving stability and localization reliability on Linux platforms.

Smarter Passkey and Login Behavior

Firefox now fixes a bug that triggered excessive passkey prompts during logins on certain websites. The update improves authentication behavior so users see fewer unnecessary security prompts while still maintaining protection.

Safer Browsing Accuracy Improved

Mozilla corrected a SafeBrowsing issue that could incorrectly flag legitimate websites as malicious. Firefox now validates threat classifications more accurately, reducing false warnings and improving browsing trust.

Additional Stability and Security Fixes

Firefox 147.0.2 also includes:

• General security hardening across browser components
• Multiple internal bug fixes for better performance and reliability
• Background fixes that improve compatibility with modern web standards

These improvements help keep Firefox stable across Windows, macOS, and Linux environments.

How to Get Firefox 147.0.2

Firefox automatically rolls out updates to most users. To manually check:

1. Open Firefox.
2. Click Menu → Help → About Firefox.
3. Allow the browser to download and install the update.
4. Restart Firefox to apply changes.

Users who prioritize security and productivity should update as soon as possible.

Firefox 147.0.2 delivers meaningful improvements without disrupting workflows. Custom keyboard shortcuts unlock productivity gains, security patches reduce risk exposure, and Linux fixes improve platform stability. Combined, these changes reinforce Firefox’s commitment to performance, privacy, and user control.