CVE-2026-2800 is a critical spoofing vulnerability in the WebAuthn component affecting Firefox for Android and Thunderbird versions prior to 148. This flaw carries a CVSS score of 9.8, indicating a severe risk with a network-based attack vector and no user interaction required, potentially leading to high impact on confidentiality, integrity, and availability. While no public exploit code or active exploitation has been confirmed, the vulnerability has garnered significant community discussion, suggesting awareness among security researchers.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 148.0CPE matchmatch criteria | cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:* | ||
< 148.0CPE matchmatch criteria | cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.