CVE-2009-3016: Apple Safari

Medium severity, CVSS 4.3. EPSS: 1.1% chance of exploitation in the next 30 days.

Apple Safari 4.0.3 does not properly block javascript: and data: URIs in Refresh headers in HTTP responses, which allows remote attackers to conduct cross-site scripting (XSS) attacks via vectors related to (1) injecting a Refresh header that contains a javascript: URI, (2) entering a javascript: URI when specifying the content of a Refresh header, (3) injecting a Refresh header that contains JavaScript sequences in a data:text/html URI, or (4) entering a data:text/html URI with JavaScript sequences when specifying the content of a Refresh header.

Affected products

• Apple Safari: version 4.0.3 only

Published 2009-08-31. Last modified 2026-06-16.