Nextcloud Two Factor Webauthn vulnerabilities

1 vulnerability

Known vulnerabilities in Nextcloud Two Factor Webauthn, newest first, with CVSS severity, EPSS, KEV listings, ransomware use and the affected versions.

4.3CVE-2025-66558nextcloudsecurity-advisories+1
EPSS score
0.28%
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.