CVE-2016-1000110

MEDIUMNVD 6.16.1—

6.1

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 v3: 6.1
EG Score: 6.1(medium)
EPSS: 93.1%
KEV: Not listed

Published

November 27, 2019

Last Modified

November 21, 2024

References (10)

cve@mitrehttp://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
cve@mitrehttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110
cve@mitrehttps://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110
cve@mitrehttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3ZGHH53YPU/
cve@mitrehttps://security-tracker.debian.org/tracker/CVE-2016-1000110
af854a3a-2127-422b-91ae-364da2661108http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-1000110
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.suse.com/show_bug.cgi?id=CVE-2016-1000110
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7K3WFJO3SJQCODKRKU6EQV3ZGHH53YPU/
af854a3a-2127-422b-91ae-364da2661108https://security-tracker.debian.org/tracker/CVE-2016-1000110

Patch Availability(6)

Vendor / Ecosystem	Fixed in / Patch	Released	Source
ubuntu	python3.4-venv (3.4.3-1ubuntu1~14.04.5) @ trusty	2026-05-27	ubuntu
redhat	rh-python34-python-0:3.4.2-13.el7	2016-08-18	redhat
redhat	python33-python-0:3.3.2-16.el7	2016-08-18	redhat
redhat	rh-python35-python-0:3.5.1-9.el7	2016-08-18	redhat
redhat	python-0:2.7.5-38.el7_2	2016-08-18	redhat
redhat	python27-python-0:2.7.8-16.el7	2016-08-18	redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-601URL Redirection to Untrusted Site (Open Redirect)

All Vendor Advisories

(6)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 9× in last 7d / 9× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-27 13:38 UTCepss_batch
2026-05-27 13:38 UTCepss_batch
2026-05-27 11:05 UTCEG score recompute
2026-05-27 11:05 UTCVendor advisory
2026-05-27 11:05 UTCGHSA enrichment
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:43 UTCepss_batch

Frequently asked(5)

What is CVE-2016-1000110?

CVE-2016-1000110 is a medium vulnerability published on November 27, 2019. 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.

When was CVE-2016-1000110 disclosed?

CVE-2016-1000110 was first published in the National Vulnerability Database on November 27, 2019, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2016-1000110 actively exploited?

CVE-2016-1000110 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 93.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2016-1000110?

CVE-2016-1000110 has a CVSS v3 base score of 6.1 (NVD).

How do I remediate CVE-2016-1000110?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-1000110, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2016-1000110

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CVE-2016-1000110

Published

Last Modified

References (10)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2016-1000110?

Same vendor

Same CWE

CVE-2016-1000110

📅 Published

🔄 Last Modified

🔗 References (10)

Patch Availability(6)

Weakness Classification(1)

All Vendor Advisories

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2016-1000110?

🔗 Related CVEs(same vendor + same CWE)

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Published

Last Modified

References (10)

Frequently asked(5)

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