Is CVE-2009-2059 actively exploited?

No active exploitation of CVE-2009-2059 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2009-2059 be exploited remotely?

Yes. CVE-2009-2059 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2009-2059?

CVE-2009-2059 has a CVSS score of 6.8 (MEDIUM).

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MEDIUM

CVE-2009-2059

CWE-287Published: June 15, 2009· Updated: Jun 16, 2026

6.8

CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2009-2059 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires some privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

From a weakness classification perspective (CWE-287): Authentication bypass vulnerabilities allow attackers to access protected resources without valid credentials.