CVE-2006-0174: Hummingbird Collaboration

Medium severity, CVSS 4.0. EPSS: 2.8% chance of exploitation in the next 30 days.

Hummingbird Collaboration (aka Hummingbird Enterprise Collaboration) 5.21 and earlier allows remote attackers to obtain sensitive information (intranet IP addresses and enumerations of valid parameter values) via a direct request to hc, which reveals the information in an error message or a cookie.

Affected products

• Hummingbird Collaboration: up to and including 5.21; version 5.2 only
• Hummingbird Enterprise Collaboration: up to and including 5.21; version 5.2 only

Published 2006-01-11. Last modified 2026-06-16.