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CVE-2026-2778

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CVSS 3.1
10.0 critical
EPSS
<1%p40
Published
()
Modified
Description

Sandbox escape due to incorrect boundary conditions in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-119
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.5%)

In the news

No ingested article mentions this CVE yet.