CVE-2025-66558

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Source
https://cve.org/CVERecord?id=CVE-2025-66558
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66558.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-66558
Aliases
  • GHSA-fr8x-mvjg-wf9q
Published
2025-12-05T18:00:49.792Z
Modified
2026-03-01T02:54:49.495034Z
Severity
  • 3.1 (Low) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N CVSS Calculator
Summary
Nextcloud Twofactor WebAuthn app was updated based on public key
Details

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.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66558.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-639"
    ]
}
References

Affected packages

Git / github.com/nextcloud/twofactor_webauthn

Affected ranges

Type
GIT
Repo
https://github.com/nextcloud/twofactor_webauthn
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
7da9d0691cb0392ceabcc967a7c9fc7151f1e43a
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.4.2"
        }
    ]
}
Type
GIT
Repo
https://github.com/nextcloud/twofactor_webauthn
Events
Introduced
92487d5cf1425c006795713e21adc81c6d1e0dc3
Fixed
72be9ebf76478e59724580ca4336fc517202e0e1
Database specific 
{
    "versions": [
        {
            "introduced": "2.0.0-beta.1"
        },
        {
            "fixed": "2.4.1"
        }
    ]
}

Affected versions

v0.*
v0.3.1
v1.*
v1.1.0
v1.2.0
v1.3.0
v1.4.0
v1.4.0-rc.1
v1.4.1
v2.*
v2.0.0-beta.1
v2.1.0-beta.1
v2.3.0
v2.4.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-66558.json"