# Firefox 153.0.4 - Product: Firefox (https://whatsnew.fyi/product/firefox) - Vendor: Mozilla - Date: 2026-08-11 - Version: 153.0.4 - Original notes: https://www.mozilla.org/en-US/firefox/153.0.4/releasenotes/ - Permalink: https://whatsnew.fyi/product/firefox/releases/153.0.4 What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **fixed** — Firefox becoming unresponsive when clearing browsing history, which could also result in site data being lost ###### Fixed - Fixed Firefox becoming unresponsive when clearing browsing history, which could also result in site data being lost. (Bug 2059647) - Reference link to 153.0.3 release notes.