CVE-2006-4954: Neosys Neon Webmail

High severity, CVSS 7.5. EPSS: 8% chance of exploitation in the next 30 days.

The updateuser servlet in Neon WebMail for Java before 5.08 does not validate the in_id parameter, which allows remote attackers to modify information of arbitrary users, as demonstrated by modifying (1) passwords and (2) permissions, (3) viewing profile settings, and (4) creating and (5) deleting users.

Affected products

• Neosys Neon Webmail: version 5.06 only; version 5.07 only

Published 2006-09-23. Last modified 2026-06-16.