Retool (self-hosted) before 3.196.0 allows Host header injection. When the BASE_DOMAIN environment variable is not set, the HTTP host header can be manipulated.
Exploitability
AV:NAC:HPR:NUI:RScope
S:UImpact
C:HI:HA:L7.1/CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:LOther