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Mozilla Firefox 153.0.3

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153.0.1โ†’153.0.3Bug fixPerformance
๐Ÿ“… August 4, 2026๐Ÿ—‚ Browsers๐Ÿ“ฆ Mozilla Firefox โ†—๐Ÿ“œ Full changelog โ†—
โœฆ Editor's summary

Firefox 153.0.3 is a maintenance release that addresses a media playback issue affecting websites that load audio and video through Blob URLs. The update improves playback reliability without introducing new features, making it a recommended upgrade for users on the Firefox 153 release channel.

What's new

Mozilla Firefox 153.0.3 is a maintenance update for the Firefox 153 release branch, focusing on stability and media playback reliability.

  • Fixed an issue where audio and video could fail to play or become unresponsive when seeking on websites that load media from a Blob URL.
  • Improved overall browser stability and media playback reliability.
  • Included routine maintenance updates and quality improvements.
Recommendation

Mozilla recommends updating to Firefox 153.0.3 to benefit from the latest stability improvements and to resolve media playback issues affecting certain websites.

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Mozilla Firefox 152.0.5Bug fixJul 7, 2026
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