VULNERABILITY INTELLIGENCE

CVE-2020-8236

CVSS score6.8 MEDIUM

EPSS probability0.59%

CISA KEVNot currently listed

Published2020-11-02

Last modified2026-06-17

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

Description

A wrong configuration in Nextcloud Server 19.0.1 incorrectly made the user feel the passwordless WebAuthn is also a two factor verification by asking for the PIN of the passwordless WebAuthn but not verifying it.

Weakness classification

support@hackerone.com: CWE-287
nvd@nist.gov: CWE-287

Primary references

support@hackerone.com — Exploit, Third Party Advisory
support@hackerone.com — Broken Link, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Vendor Advisory