VULNERABILITY INTELLIGENCE

CVE-2016-1000111

CVSS score5.3 MEDIUM
EPSS probability2.76%
CISA KEVNot currently listed
Published2020-03-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Description

Twisted before 16.3.1 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect CGI applications from the presence of untrusted client data in the HTTP_PROXY environment variable, which might allow remote attackers to redirect a CGI application's outbound HTTP traffic to an arbitrary proxy server via a crafted Proxy header in an HTTP request, aka an "httpoxy" issue.

Weakness classification

  • CWE-425: Direct Request ('Forced Browsing')

Primary references