3.1Low
CVE-2025-66558Nextcloud Twofactor WebAuthn app was updated based on public key
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.
Weakness (CWE):
CWE-639
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| nextcloud | security-advisories | < 1.4.2, >= 2.0.0-beta.1, < 2.4.1 | |
| nextcloud | two-factor webauthn | 1.0.0 – < 1.4.2 |
References and patches
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-fr8x-mvjg-wf9q PatchVendor Advisory
- https://github.com/nextcloud/twofactor_webauthn/pull/881 Issue TrackingPatch
- https://github.com/nextcloud/twofactor_webauthn/commit/5d2302166d31ee2e01b2e21556bd5372156da13d Patch
- https://hackerone.com/reports/3360354 Vendor Advisory
CPE matches (NVD) (2)
cpe:2.3:a:nextcloud:two-factor_webauthn:*:*:*:*:*:*:*:*≥ 1.0.0 < 1.4.2cpe:2.3:a:nextcloud:two-factor_webauthn:*:*:*:*:*:*:*:*≥ 2.0.0 < 2.4.1