CVE-2009-2059: Opera Browser

Medium severity, CVSS 6.8. EPSS: 1.3% chance of exploitation in the next 30 days.

Opera, possibly before 9.25, uses the HTTP Host header to determine the context of a document provided in a (1) 4xx or (2) 5xx CONNECT response from a proxy server, which allows man-in-the-middle attackers to execute arbitrary web script by modifying this CONNECT response, aka an "SSL tampering" attack.

Affected products

• Opera Opera Browser: up to and including 9.22; version 7.0 only; version 7.23 only; version 7.53 only; version 7.54 only; version 7.60 only; …

Published 2009-06-15. Last modified 2026-06-16.