CVE-2026-2800

CRITICAL

Firefox for Android <148 - Spoofing

Title source: llm

Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability was fixed in Firefox 148 and Thunderbird 148.

CVSS v3 9.8

EPSS 0.0006

EPSS Percentile 18.3%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

CWE

CWE-290

Status published

Products (4)

mozilla/firefox < 148.0

Mozilla/Firefox 148

mozilla/thunderbird < 148.0

Mozilla/Thunderbird 148

Published Feb 24, 2026

Tracked Since Feb 24, 2026