A bug in Nextcloud Server 17.0.1 causes the workflow rules to depend their behaviour on the file extension when checking file mimetypes.
https://hackerone.com/reports/697959
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00022.html
http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00019.html
https://nextcloud.com/security/advisory/?id=NC-SA-2020-002
Source: Mitre, NVD
Published: 2020-02-04
Updated: 2023-05-11
Base Score: 6
Vector: CVSS2#AV:N/AC:M/Au:S/C:P/I:P/A:P
Severity: Medium
Base Score: 8
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00264