A vulnerability has been identified within Rancher that can be exploited in narrow circumstances through a man-in-the-middle (MITM) attack. An attacker would need to have control of an expired domain or execute a DNS spoofing/hijacking attack against the domain to exploit this vulnerability. The targeted domain is the one used as the Rancher URL.
Exploitability
AV:NAC:HPR:HUI:NScope
S:CImpact
C:HI:HA:H8/CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:HCryptography