CVE-2007-1991: Youngzsoft Cmailserver

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in mail/signup.asp in CmailServer WebMail 5.4.3, and possibly earlier, allows remote attackers to inject arbitrary web script or HTML via the Comment parameter, a different vector than CVE-2007-1927.

Affected products

• Youngzsoft Cmailserver: up to and including 5.4.3

Published 2007-04-12. Last modified 2026-06-16.