CVE-2011-0161: Apple iPhone OS

Medium severity, CVSS 4.3. EPSS: 1.7% chance of exploitation in the next 30 days.

WebKit, as used in Apple Safari before 5.0.4 and iOS before 4.3, does not properly handle the Attr.style accessor, which allows remote attackers to bypass the Same Origin Policy and inject Cascading Style Sheets (CSS) token sequences via a crafted web site.

Affected products

• Apple iPhone OS: up to and including 4.2; version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.1.0 only; version 1.1.1 only; …
• Apple Safari: up to and including 5.0.3; version 1.0 only; version 1.0.0 only; version 1.0.0b1 only; version 1.0.0b2 only; version 1.0.1 only; …
• Apple Webkit: any version

Published 2011-03-11. Last modified 2026-06-16.