CVE-2011-2635: Opera Browser

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

The Cascading Style Sheets (CSS) implementation in Opera before 11.10 allows remote attackers to cause a denial of service (application crash) via vectors involving use of the :hover pseudo-class, in conjunction with transforms, for a floated element.

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.