CVE-2026-8947High· 7.3▾ TwilightUse-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 40.2 · likelihood 0.1 · exploitation 0
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Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.4%
Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.
firefox < 115.36.0firefox < 151.0.0firefox >= 140.0, < 140.11.0thunderbird < 140.11Upgrade past the affected range:
firefox 140.11.0thunderbird 140.11Connected by shared product, vendor, weakness, or advisory.
CVE-2026-100831High· 8.8Use-after-free in the DOM: UI Events & Focus Handling component
CVE-2026-100818Critical· 9.6Sandbox escape due to use-after-free in the Widget: Gtk component
CVE-2026-100815High· 8.8Use-after-free in the CSS Parsing and Computation component
CVE-2026-100811Critical· 9.6Sandbox escape due to use-after-free in the DOM: Core & HTML component
CVE-2026-100805High· 7.5Race condition, use-after-free in the Audio/Video component
CVE-2026-100804Critical· 9.6Sandbox escape due to use-after-free in the Preferences: Backend component