CVE-2004-2755: Symantec Web Security

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in Symantec Web Security 2.5, 3.0.0, and 3.0.1 before build 62 allows remote attackers to inject arbitrary web script or HTML via the query string in blocked URLs that are listed in (1) error or (2) block page messages.

Affected products

• Symantec Web Security: version 2.5 only; version 3.0 only; version 3.0.1 only

Published 2004-12-31. Last modified 2026-06-16.