# Firefox extension memory leak

**URL:** <https://community.metamask.com/t/firefox-extension-memory-leak/31554>\
**Category:** Feature Requests\
**Created:** [June 28, 2026, 5:10pm UTC](https://community.metamask.com/t/firefox-extension-memory-leak/31554 "2026-06-28T17:10:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![kvzsolt](https://avatars.discourse-cdn.com/v4/letter/k/848f3c/32.png) [@kvzsolt](https://community.metamask.com/u/kvzsolt)\
**Post date:** [June 28, 2026, 5:10pm UTC](https://community.metamask.com/t/firefox-extension-memory-leak/31554/1 "2026-06-28T17:10:38Z")

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**Description: Fix Firefox Browser Extension Memory Leak, causing ~2.5GB RAM usage while the browser open, triple amount of browser itself.**

**Purpose: Bugfix**

**Extension/Mobile/Both: Firefox browser extension**

**Images/Attachments:**

 ![Screenshot From 2026-06-28 19-09-18](https://europe1.discourse-cdn.com/metamask/original/3X/2/0/205fe5c6c65cfc425f30c88cdbf312bdbab34145.png)

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**Author:** ![theweb3dave](https://dub1.discourse-cdn.com/metamask/user_avatar/community.metamask.com/theweb3dave/32/39163_2.png) [@theweb3dave](https://community.metamask.com/u/theweb3dave)\
**Post date:** [June 28, 2026, 7:32pm UTC](https://community.metamask.com/t/firefox-extension-memory-leak/31554/2 "2026-06-28T19:32:07Z")

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Hi! Thanks for reporting that. This will be forwarded to the team as soon as possible.  
You can also share the feedback directly with MetaMask support team via [https://support.metamask.io/](https://support.metamask.io/)

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**Author:** ![Khaled1](https://dub1.discourse-cdn.com/metamask/user_avatar/community.metamask.com/khaled1/32/39657_2.png) [@Khaled1](https://community.metamask.com/u/Khaled1)\
**Post date:** [June 28, 2026, 7:48pm UTC](https://community.metamask.com/t/firefox-extension-memory-leak/31554/3 "2026-06-28T19:48:26Z")

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- Thanks for reporting this bug. Although it has already been reported before: [[Bug]: Memory leak in Firefox · Issue #42891 · MetaMask/metamask-extension · GitHub](https://github.com/MetaMask/metamask-extension/issues/42891)

The team is probably aware of it, so, please go ahead and do what theweb3dave suggested.

- Just to confirm - what version of MetaMask are you using? it should 13.34.1.0 cuz Another user has also experienced the same issue with the latest version of the Firefox extension.