CVE-2010-1236: Flock

Medium severity, CVSS 4.3. EPSS: 1.4% chance of exploitation in the next 30 days.

The protocolIs function in platform/KURLGoogle.cpp in WebCore in WebKit before r55822, as used in Google Chrome before 4.1.249.1036 and Flock Browser 3.x before 3.0.0.4112, does not properly handle whitespace at the beginning of a URL, which allows remote attackers to conduct cross-site scripting (XSS) attacks via a crafted javascript: URL, as demonstrated by a \x00javascript:alert sequence.

Affected products

• Flock Flock: version 3.0.0.4094 only
• Google Chrome: up to and including 4.1.249.1035; version 0.1.38.1 only; version 0.1.38.2 only; version 0.1.38.4 only; version 0.1.40.1 only; version 0.1.42.2 only; …

Published 2010-04-01. Last modified 2026-06-16.