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3 vulnerabilities found for two-factor_webauthn by nextcloud

FKIE_CVE-2025-66558

Vulnerability from fkie_nvd - Published: 2025-12-05 18:15 - Updated: 2025-12-09 16:44
Severity ?
3.1 (Low) - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/nextcloud/security-advisories/security/advisories/GHSA-fr8x-mvjg-wf9qPatch, Vendor Advisory
security-advisories@github.comhttps://github.com/nextcloud/twofactor_webauthn/commit/5d2302166d31ee2e01b2e21556bd5372156da13dPatch
security-advisories@github.comhttps://github.com/nextcloud/twofactor_webauthn/pull/881Issue Tracking, Patch
security-advisories@github.comhttps://hackerone.com/reports/3360354Permissions Required, Vendor Advisory
Impacted products
Vendor Product Version
nextcloud two-factor_webauthn *
nextcloud two-factor_webauthn *
To clipboard 

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    }
  ],
  "id": "CVE-2025-66558",
  "lastModified": "2025-12-09T16:44:58.910",
  "metrics": {
    "cvssMetricV31": [
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          "attackComplexity": "HIGH",
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          "version": "3.1"
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        "impactScore": 1.4,
        "source": "security-advisories@github.com",
        "type": "Secondary"
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      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

CVE-2025-66558 (GCVE-0-2025-66558)

Vulnerability from cvelistv5 – Published: 2025-12-05 18:00 – Updated: 2025-12-05 18:35
VLAI?
Title
Nextcloud Twofactor WebAuthn app was updated based on public key
Summary
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 ?
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
nextcloud security-advisories Affected: < 1.4.2
Affected: >= 2.0.0-beta.1, < 2.4.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-66558 (GCVE-0-2025-66558)

Vulnerability from nvd – Published: 2025-12-05 18:00 – Updated: 2025-12-05 18:35
VLAI?
Title
Nextcloud Twofactor WebAuthn app was updated based on public key
Summary
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 ?
3.1 (Low)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
nextcloud security-advisories Affected: < 1.4.2
Affected: >= 2.0.0-beta.1, < 2.4.1
Create a notification for this product.
Show details on NVD website
To clipboard 

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