A missing file type check in Nextcloud Contacts 3.2.0 allowed a malicious user to upload any file as avatars.
https://nextcloud.com/security/advisory/?id=NC-SA-2020-024
https://hackerone.com/reports/808287%2C
Source: Mitre, NVD
Published: 2020-07-10
Updated: 2026-06-17
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.00231