Craft is a platform for creating digital experiences. From 5.0.0-RC1 to 5.8.21, Craft has a stored XSS via Entry Type names. The name is not sanitized when displayed in the Entry Types list. This vulnerability is fixed in 5.8.22.
Exploitability
AV:NAC:LAT:NPR:HUI:PVulnerable System
VC:LVI:LVA:NSubsequent System
SC:NSI:NSA:N1.9/CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:PInjection