CVE-2020-8236

6.8 mediumEPSS 0.6%

Medium (6.8) in nextcloud nextcloud server. EPSS 0.6% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

6.8 medium

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

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 48% of CVEs (scores of 2026-10-31)
CWE: CWE-287
Published: 2020-11-02
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

nextcloud:nextcloud_server

References

https://hackerone.com/reports/924393
https://nextcloud.com/security/advisory/?id=NC-SA-2020-037
https://hackerone.com/reports/924393
https://nextcloud.com/security/advisory/?id=NC-SA-2020-037

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