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CVE Vulnerability Details :

CVE-2026-2800

PUBLISHED

More Info Official Page

Assigner-mozilla

Assigner Org ID-f16b083a-5664-49f3-a51e-8d479e5ed7fe

Published At-24 Feb, 2026 | 13:33

Updated At-26 Feb, 2026 | 20:34

▼CVE Numbering Authority (CNA)

Spoofing issue in the WebAuthn component in Firefox for Android

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

Affected Products

Vendor

Mozilla Corporation

Product

Firefox

Versions

Affected

From unspecified before 148 (custom)

Vendor

Mozilla Corporation

Product

Thunderbird

Versions

Affected

From unspecified before 148 (custom)

Credits

hafiizh & kang ali

References

Hyperlink	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=1988145	N/A
https://www.mozilla.org/security/advisories/mfsa2026-13/	N/A
https://www.mozilla.org/security/advisories/mfsa2026-16/	N/A

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

Resource: N/A

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

Resource: N/A

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

Resource: N/A

▼Authorized Data Publishers (ADP)

CISA ADP Vulnrichment

Problem Types

Type	CWE ID	Description
CWE	CWE-290	CWE-290 Authentication Bypass by Spoofing

Type: CWE

CWE ID: CWE-290

Description: CWE-290 Authentication Bypass by Spoofing

Metrics

Version	Base score	Base severity	Vector
3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Version: 3.1

Base score: 9.8

Base severity: CRITICAL

Vector:

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

Affected Products

Affected

Affected

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References

Affected Products

Problem Types

Metrics

Metrics Other Info

Impacts

Solutions

Configurations

Workarounds

Exploits

Credits

Timeline

Replaced By

Rejected Reason

References