CVE-2026-8948Critical· 9.1▾ MidnightSame-origin policy bypass in the DOM: Networking component. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 50.1 · likelihood 0.1 · exploitation 0
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Exploit-prediction probability, daily snapshots since Oct 14.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.5%
Same-origin policy bypass in the DOM: Networking component. 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.
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