CVE-2011-4686: Opera Browser

Medium severity, CVSS 5.0. EPSS: 2.2% chance of exploitation in the next 30 days.

Unspecified vulnerability in the Web Workers implementation in Opera before 11.60 allows remote attackers to cause a denial of service (application crash) via unknown vectors.

Affected products

• Opera Opera Browser: up to and including 11.60; version 5.0 only; version 5.02 only; version 5.10 only; version 5.11 only; version 5.12 only; …

Published 2011-12-07. Last modified 2026-06-16.