CVE-2003-1026: Microsoft Ie

High severity, CVSS 9.3. EPSS: 39.2% chance of exploitation in the next 30 days.

Internet Explorer 5.01 through 6 SP1 allows remote attackers to bypass zone restrictions via a javascript protocol URL in a sub-frame, which is added to the history list and executed in the top window's zone when the history.back (back) function is called, as demonstrated by BackToFramedJpu, aka the "Travel Log Cross Domain Vulnerability."

Affected products

• Microsoft Ie: version 6.0 only
• Microsoft Internet Explorer: version 5.0 only; version 5.0.1 only; version 5.5 only; version 6.0 only

Published 2004-01-20. Last modified 2026-06-16.