CVE-2009-4071: Opera Browser

Medium severity, CVSS 5.8. EPSS: 2.2% chance of exploitation in the next 30 days.

Opera before 10.10, when exception stacktraces are enabled, places scripting error messages from a web site into variables that can be read by a different web site, which allows remote attackers to obtain sensitive information or conduct cross-site scripting (XSS) attacks via unspecified vectors.

Affected products

• Opera Opera Browser: up to and including 10.10; version 7.0 only; version 7.23 only; version 7.53 only; version 7.54 only; version 7.60 only; …

Published 2009-11-24. Last modified 2026-06-16.