CVE-2010-5144: Websense

Medium severity, CVSS 4.3. EPSS: 1.5% chance of exploitation in the next 30 days.

The ISAPI Filter plug-in in Websense Enterprise, Websense Web Security, and Websense Web Filter 6.3.3 and earlier, when used in conjunction with a Microsoft ISA or Microsoft Forefront TMG server, allows remote attackers to bypass intended filtering and monitoring activities for web traffic via an HTTP Via header.

Affected products

• Websense Websense: up to and including 6.3.3; version 6.3.0 only; version 6.3.1 only
• Websense Websense Web Filter: up to and including 6.3.3; version 6.3.0 only; version 6.3.1 only
• Websense Websense Web Security: version 6.3.0 only; version 6.3.1 only; version 6.3.3 only

Published 2012-08-23. Last modified 2026-06-16.