CVE-2004-1993: Omail Webmail

High severity, CVSS 10.0. EPSS: 4.7% chance of exploitation in the next 30 days.

The patch to the checklogin function in omail.pl for omail webmail 0.98.5 is incomplete, which allows remote attackers to execute arbitrary commands via shell metacharacters such as "`" (backticks) in the password.

Affected products

• Omail Omail Webmail: version 0.97.3 only; version 0.98.3 only; version 0.98.5 only

Published 2004-05-04. Last modified 2026-06-16.