CVE-2010-2121: Opera Browser

Medium severity, CVSS 4.3. EPSS: 2% chance of exploitation in the next 30 days.

Opera 9.52 allows remote attackers to cause a denial of service (resource consumption) via JavaScript code containing an infinite loop that creates IFRAME elements for invalid (1) news:// or (2) nntp:// URIs.

Affected products

• Opera Opera Browser: version 9.52 only

Published 2010-06-01. Last modified 2026-06-16.