Mondoo Vulnerability Intelligence

Curated by Mondoo Research, enhanced with AI

Resources

Search Vulnerabilities
Trending CVEs
Browse Ecosystems
Terminology
Blog

Open Source

cnquery
cnspec

Star us on GitHub!

Company

Mondoo Platform
About
Contact

Vulnerability Intelligence

Customers

CVE-2026-2800 | Mondoo Vulnerability Intelligence

Vulnerability IntelligenceCVE-2026-2800

CVE-2026-2800

CRITICAL9.8

Spoofing issue in the WebAuthn component in Firefox for Android

Published Feb 24, 2026

Modified 6 days ago

Fix available

Details

Spoofing issue in the WebAuthn component in Firefox for Android. This vulnerability affects Firefox < 148 and Thunderbird < 148.

Affected Packages

Firefox

Ubuntu 14.04 LTSUbuntu 16.04 LTSUbuntu 18.04 LTSUbuntu 20.04 LTSUbuntu 22.04 LTS

Fixed in:

148

Mozilla Firefox

Windows 10 (1507)Windows 10 (1607) / Server 2016Windows 10 (1809) / Server 2019Windows 10 (1903)Windows 10 (1909)

Fixed in:

148

References

WEB

https://bugzilla.mozilla.org/show_bug.cgi?id=1988145

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-2800

WEB

https://www.mozilla.org/security/advisories/mfsa2026-13/

WEB

https://www.mozilla.org/security/advisories/mfsa2026-16/

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

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

Ecosystems(28)

Ubuntu 14.04 LTS Ubuntu 16.04 LTS Ubuntu 18.04 LTS Ubuntu 20.04 LTS Ubuntu 22.04 LTS

Timeline

PublishedFeb 24, 2026

ModifiedFeb 26, 2026