A cross-site-scripting (XSS) vulnerability exists when Microsoft Exchange Server does not properly sanitize a specially crafted web request to an affected Exchange server, aka 'Microsoft Exchange Server Spoofing Vulnerability'.
Severity
Medium 5.4
Published
15 Jul 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
1.6% in the next 30 daysHigher than 75% of CVEs. EPSS by FIRST, 10 Nov 2026
Sources
NVD
Affected software
Software
Affected versions
Microsoft Exchange ServerServers and applications · cpe:a:microsoft:exchange_server