CVE-2011-0682: Opera Browser

High severity, CVSS 9.3. EPSS: 5.6% chance of exploitation in the next 30 days.

Integer truncation error in opera.dll in Opera before 11.01 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via an HTML form with a select element that contains a large number of children.

Affected products

• Opera Opera Browser: up to and including 11.00; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2011-01-31. Last modified 2026-06-16.