Auth bypass in Opera Browser

CVE-2009-2059

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.

Vulnerability class: Broken Authentication

EPSS: 0.013 (67.4th percentile) — read the EPSS interpretation.