Vulnerability record · CVE-2016-1000111 · published 11 March 2020

CVE-2016-1000111: Twisted vulnerability

Twisted · Twisted

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.

5.3 CVSS 3.1 Medium EPSS 2.8% · top 14.3% CWE-425 · CWE-425

5.3CVSS 3.1 base score, v2 5.0

2.8%EPSS exploitation probability, 30 days

NoNot in CISA KEV

1Affected product versions listed by NVD

8References

17 Jun 2026Last modified by NVD

Description

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

Twisted Twisted

References

Link	Tags
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html	Third Party Advisory
https://twistedmatrix.com/pipermail/twisted-web/2016-August/005268.html	Mailing ListVendor Advisory
https://twistedmatrix.com/trac/ticket/8623	PatchVendor Advisory
https://www.openwall.com/lists/oss-security/2016/07/18/6	Mailing ListThird Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html	Third Party Advisory
https://twistedmatrix.com/pipermail/twisted-web/2016-August/005268.html	Mailing ListVendor Advisory
https://twistedmatrix.com/trac/ticket/8623	PatchVendor Advisory
https://www.openwall.com/lists/oss-security/2016/07/18/6	Mailing ListThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2016-1000111), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.