CVE-2016-1000111: n/a vulnerability

CVE-2016-1000111: Twisted before 16.3.1 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 03:55 UTC (UTC+00:00)

Security readout for executives and security teams

This is the Twisted variant of the 2016 httpoxy issue. A specially crafted HTTP Proxy header could become an HTTP_PROXY environment variable for CGI applications, causing their outbound HTTP requests to use an attacker-chosen proxy. The main business risk is interception or manipulation of server-side outbound traffic from affected CGI workloads. Exposure is most likely in legacy services using Twisted before 16.3.1 to run CGI applications that make outbound HTTP requests. The bundle does not identify specific products, distributions, or CPEs beyond Twisted. Prioritize remediation for internet-facing legacy CGI services that make server-side HTTP calls. The issue is old and not KEV-listed, but affected systems can expose sensitive outbound traffic paths if still deployed. Mitigation focus: Upgrade Twisted to 16.3.1 or later where applicable.; Review Twisted and platform vendor guidance for httpoxy-specific hardening.; Ensure CGI environments do not expose untrusted HTTP_PROXY values..

Prepared: Jun 6, 2026, 02:01 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Mar 11, 2020, 19:05 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

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0Timeline events

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4Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://www.openwall.com/lists/oss-security/2016/07/18/6CVE reference · x_refsource_MISC
https://twistedmatrix.com/trac/ticket/8623CVE reference · x_refsource_CONFIRM
https://twistedmatrix.com/pipermail/twisted-web/2016-August/005268.htmlCVE reference · x_refsource_CONFIRM

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

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