CVE-2026-8960High· 7.5▾ TwilightSpoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 41.3 · 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%
Spoofing issue in WebExtensions. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
firefox < 151.0.0thunderbird < 151.0.0Upgrade past the affected range:
firefox 151.0.0thunderbird 151.0.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-109783NoneMitigation bypass in the File Handling component
CVE-2026-109782NoneMitigation bypass in the File Handling component
CVE-2026-109781Medium· 6.5Denial-of-service in the Printing: Output component
CVE-2026-109780NoneMitigation bypass in the DOM: Core & HTML component
CVE-2026-109779Medium· 4.2Race condition in the Networking: DNS component
CVE-2026-109778High· 8.8Privilege escalation in the WebExtensions component