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CVE-2026-16396

—
CVSS 3.1
8.8 high
EPSS
<1%p15
Published
()
Modified
Description

Privilege escalation in WebExtensions. This vulnerability was fixed in Firefox 153, Firefox ESR 140.13, Thunderbird 153, and Thunderbird 140.13.

Vendors
mozilla
Products
firefox, thunderbird
Weakness
CWE-269
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
NVD CVE.org GitHub PoCs EPSS (0.2%)

In the news

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