CVE-2021-22877

PoC —

CVSS 3.1

6.5 medium

EPSS

2%p76

Published

Mar 3, 2021 (Mar 3, 2021)

Modified

Jun 17, 2026

Description

A missing user check in Nextcloud prior to 20.0.6 inadvertently populates a user's own credentials for other users external storage configuration when not already configured yet.

Vendors: nextcloud fedoraproject
Products: nextcloud server, fedora
Weakness: CWE-284, CWE-862
Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (1.7%)

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