CVE-2010-4045: Opera Browser

High severity, CVSS 9.3. EPSS: 5% chance of exploitation in the next 30 days.

Opera before 10.63 does not properly restrict web script in unspecified circumstances involving reloads and redirects, which allows remote attackers to spoof the Address Bar, conduct cross-site scripting (XSS) attacks, and possibly execute arbitrary code by leveraging the ability of a script to interact with a web page from (1) a different domain or (2) a different security context.

Affected products

• Opera Opera Browser: up to and including 10.62; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2010-10-21. Last modified 2026-06-16.