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CVE-2018-12378 A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by JavaScript code that…

Description

A use-after-free vulnerability can occur when an IndexedDB index is deleted while still in use by JavaScript code that is providing payload values to be stored. This results in a potentially exploitable crash. This vulnerability affects Firefox < 62, Firefox ESR < 60.2, and Thunderbird < 60.2.1.

Affected products and versions

Product Affected versions Fixed in
Firefox 62 earliest → < 62 62
Firefox ESR 60.2 earliest → < 60.2 60.2
Thunderbird 60.2 earliest → < 60.2.1 60.2.1

Other CVEs of Firefox

The 2221 CVEs of Firefox →
CVE-2026-120572 Incorrect boundary conditions in the Layout: Block and Inline component 8.8 High CVE-2026-118027 Frame poisoning in the Layout component 9.1 Critical CVE-2026-118025 Other issue in the SVG component 8.8 High CVE-2026-118024 Use-after-free in the Graphics: Text component 8.8 High
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