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

🗓️ 05 Dec 2025 18:00:49Reported by GitHub_MType 
cvelist
 cvelist
🔗 www.cve.org👁 45 Views

WebAuthn twofactor flaw allowed theft of a device by guessing a random string; fixed in 1.4.2.

Related
Affected
Refs
ReporterTitlePublishedViews
Family
cnnvd
CNNVD
WebAuthn second-factor provider for NextCloud has a security vulnerability
5 Dec 202500:00
–cnnvd
cve
CVE
CVE-2025-66558
5 Dec 202518:00
–cve
euvd
EUVD
EUVD-2025-201460
5 Dec 202518:00
–euvd
nextcloud
Nextcloud
WebAuthn app was updated based on public key
5 Dec 202507:50
–nextcloud
hackerone
Hacker One
Nextcloud: WebAuthn app was updated based on public key
27 Sep 202516:53
–hackerone
mend
Mend
CVE-2025-66558
5 Dec 202518:00
–mend
nvd
NVD
CVE-2025-66558
5 Dec 202518:15
–nvd
ptsecurity
Positive Technologies
PT-2025-49302
5 Dec 202500:00
–ptsecurity
rapid7
Rapid7 Vulnerability Database (full)
CVE-2025-66558: Authorization Bypass Through User-Controlled Key
5 Dec 202500:00
–rapid7
redhatcve
RedhatCVE
CVE-2025-66558
9 Dec 202508:27
–redhatcve
Rows per page
[
  {
    "vendor": "nextcloud",
    "product": "security-advisories",
    "versions": [
      {
        "version": "< 1.4.2",
        "status": "affected"
      },
      {
        "version": ">= 2.0.0-beta.1, < 2.4.1",
        "status": "affected"
      }
    ]
  }
]

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