Improper input validation in Opera Browser

CVE-2011-2631

The Cascading Style Sheets (CSS) implementation in Opera before 11.11 does not properly handle the column-count property, which allows remote attackers to cause a denial of service (infinite repaint loop and application hang) via a web page, as demonstrated by an unspecified Wikipedia page.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.022 (81.0th percentile) — read the EPSS interpretation.