๐Ÿ›ก๏ธ CVE-2025-66558
๐ŸŸข CVSS 3.1 โ€” Low โœ… No Known Exploit CWE-639 NVD
3.1
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

Nextcloud Twofactor WebAuthn is the WebAuthn Two-Factor Provider for Nextcloud. Prior to 1.4.2 and 2.4.1, a missing ownership check allowed an attack to take-away a 2FA webauthn device when correctly guessing a 80-128 character long random string of letters, numbers and symbols. The victim would then be prompted to register a new device on the next login. The attacker can not authenticate as the victim. This vulnerability is fixed in 1.4.2 and 2.4.1.

Details

Severity LOW
CVSS Score 3.1
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE CWE-639
Public Exploit โœ… No
Source NVD
Published 2025-12-05
Updated 2026-06-02
Modified 2025-12-09

Affected Packages

Software From version Fixed in
two-factor-webauthn 2.0.0 2.4.1

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