CVE-2006-1834: Opera Browser

Medium severity, CVSS 5.1. EPSS: 12.4% chance of exploitation in the next 30 days.

Integer signedness error in Opera before 8.54 allows remote attackers to execute arbitrary code via long values in a stylesheet attribute, which pass a length check. NOTE: a sign extension problem makes the attack easier with shorter strings.

Affected products

• Opera Opera Browser: up to and including 8.53; version 1.00 only; version 2.00 only; version 2.10 only; version 2.12 only; version 3.00 only; …

Published 2006-04-19. Last modified 2026-06-16.