CVE-2010-4047: Opera Browser

Medium severity, CVSS 4.3. EPSS: 1% chance of exploitation in the next 30 days.

Opera before 10.63 does not properly select the security context of JavaScript code associated with an error page, which allows user-assisted remote attackers to conduct cross-site scripting (XSS) attacks via a crafted web site.

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.