CVE 3.1 LOW

Nextcloud Twofactor WebAuthn app was updated based on public key_CVE-2025-66558

3.1 / 10
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N

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.

Basic Information

ID CVE-2025-66558
Source GitHub_M
Published Dec 5, 2025 at 18:00
Modified Dec 5, 2025 at 18:35

Affected Product

Vendor nextcloud
Product security-advisories
Version < 1.4.2
Affected Versions nextcloud security-advisories < 1.4.2
nextcloud security-advisories >= 2.0.0-beta.1, < 2.4.1

CWE Classification

References

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