CVE-2011-3881: Apple iPhone OS

Medium severity, CVSS 4.3. EPSS: 1.8% chance of exploitation in the next 30 days.

WebKit, as used in Google Chrome before 15.0.874.102 and Android before 4.4, allows remote attackers to bypass the Same Origin Policy and conduct Universal XSS (UXSS) attacks via vectors related to (1) the DOMWindow::clear function and use of a selection object, (2) the Object::GetRealNamedPropertyInPrototypeChain function and use of an __proto__ property, (3) the HTMLPlugInImageElement::allowedToLoadFrameURL function and use of a javascript: URL, (4) incorrect origins for XSLT-generated documents in the XSLTProcessor::createDocumentFromSource function, and (5) improper handling of synchronous frame loads in the ScriptController::executeIfJavaScriptURL function.

Affected products

• Apple iPhone OS: before 5.1 (fixed in 5.1)
• Apple Safari: before 5.1.4 (fixed in 5.1.4)
• Google Android: before 4.4 (fixed in 4.4)
• Google Chrome: before 15.0.874.102 (fixed in 15.0.874.102)

Published 2011-10-25. Last modified 2026-06-16.