CVE-2025-66558 - Nextcloud Twofactor WebAuthn app was updated based on public key
CVE ID : CVE-2025-66558
Published : Dec. 5, 2025, 6 p.m. | 29 minutes ago
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.
Severity: 0.0 | NA
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Published : Dec. 5, 2025, 6 p.m. | 29 minutes ago
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.
Severity: 0.0 | NA
Visit the link for more details, such as CVSS details, affected products, timeline, and more...