Microsoft ADFS 4.0 Windows Server 2016 and previous (Active Directory Federation Services) has an SSRF vulnerability via the txtBoxEmail parameter in /adfs/ls.
https://seclists.org/bugtraq/2018/Sep/26
http://www.securityfocus.com/bid/105378
http://seclists.org/fulldisclosure/2018/Sep/13
http://packetstormsecurity.com/files/149376/Microsoft-ADFS-4.0-Windows-Server-2016-Server-Side-Request-Forgery.html
Source: Mitre, NVD
Published: 2018-09-18
Updated: 2026-06-17
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
Severity: Medium
Base Score: 8.6
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
Severity: High
EPSS: 0.00349