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7.5 High

CVE-2024-9399 A website configured to initiate a specially crafted WebTransport session could crash the Firefox process leading to a…

Description

A website configured to initiate a specially crafted WebTransport session could crash the Firefox process leading to a denial of service condition. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Thunderbird < 128.3, and Thunderbird < 131.

Affected products and versions

Product Affected versions Fixed in
Firefox 131 earliest → < 131 131
Firefox ESR 128.3 earliest → < 128.3 128.3
Thunderbird 131 earliest → < 131 131

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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-2026-118026 Invalid pointer in the JavaScript: GC component 8.8 High CVE-2026-118025 Other issue in the SVG component 8.8 High
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