CVE-2011-2628: Opera Browser

High severity, CVSS 10.0. EPSS: 13.4% chance of exploitation in the next 30 days.

Opera before 11.11 does not properly implement FRAMESET elements, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via vectors related to page unload.

Affected products

• Opera Opera Browser: up to and including 11.10; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2011-07-01. Last modified 2026-06-16.