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Case File

CVE-2009-1836

MEDIUM · CVSS 6.8 EPSS 2.03%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2009-06-12 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 6.8. It affects Firefox.

CVE
CVE-2009-1836
Severity
MEDIUM
CVSS
6.8
EPSS
2.03%
Firefox

Original NVD Description

Mozilla Firefox before 3.0.11, Thunderbird before 2.0.0.22, and SeaMonkey before 1.1.17 use the HTTP Host header to determine the context of a document provided in a non-200 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.