CVE-2011-3388: Opera Browser

Medium severity, CVSS 4.3. EPSS: 2.3% chance of exploitation in the next 30 days.

Opera before 11.51 allows remote attackers to cause an insecure site to appear secure or trusted via unspecified actions related to Extended Validation and loading content from trusted sources in an unspecified sequence that causes the address field and page information dialog to contain security information based on the trusted site, instead of the insecure site.

Affected products

• Opera Opera Browser: up to and including 11.50; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2011-09-06. Last modified 2026-06-16.