The "Count per Day" plugin before 3.2.6 for WordPress allows XSS via the wp-admin/?page=cpd_metaboxes daytoshow parameter.
https://wordpress.org/plugins/count-per-day/#developers
Source: Mitre, NVD
Published: 2019-06-15
Updated: 2019-06-17
Base Score: 4.3
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 6.1
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
EPSS: 0.00439