CVE-2001-0631: Opentext Firstclass

Medium severity, CVSS 5.0. EPSS: 1.5% chance of exploitation in the next 30 days.

Centrinity First Class Internet Services 5.50 allows for the circumventing of the default 'spam' filters via the presence of '<@>' in the 'From:' field, which allows remote attackers to send spoofed email with the identity of local users.

Affected products

• Opentext Firstclass: version 5.50 only

Published 2001-08-22. Last modified 2026-06-16.