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Vulnerability record · CVE-2016-1000110 · published 27 November 2019

CVE-2016-1000110: Python open redirect vulnerability

Python · Python

The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.

6.1 CVSS 3.1 Medium EPSS 4.5% · top 8.3% CWE-601 · Open redirect
6.1CVSS 3.1 base score, v2 5.8
4.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
10References
17 Jun 2026Last modified by NVD

Description

The CGIHandler class in Python before 2.7.12 does not protect against the HTTP_PROXY variable name clash in a CGI script, which could allow a remote attacker to redirect HTTP requests.

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

Affected products

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

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110 Issue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110 Issue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3
https://security-tracker.debian.org/tracker/CVE-2016-1000110 Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html Mailing ListThird Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110 Issue TrackingThird Party Advisory
https://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110 Issue TrackingThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3
https://security-tracker.debian.org/tracker/CVE-2016-1000110 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-1000110), CISA KEV, FIRST EPSS (scores of 2026-11-14). This page is refreshed as NVD updates the record.