VULNERABILITY INTELLIGENCE

CVE-2009-1836

CVSS score6.8 MEDIUM
EPSS probability2.03%
CISA KEVNot currently listed
Published2009-06-12
Last modified2026-06-16
CVSS vectorAV:N/AC:M/Au:N/C:P/I:P/A:P

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.

Weakness classification

  • CWE-287: Improper Authentication

Primary references