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Vulnerability record · CVE-2016-1000108 · published 10 December 2019

CVE-2016-1000108: Yaws open redirect vulnerability

Yaws · Yaws

yaws before 2.0.4 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.

6.1 CVSS 3.1 Medium EPSS 1.1% · top 35.7% CWE-601 · Open redirect
6.1CVSS 3.1 base score, v2 5.8
1.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

yaws before 2.0.4 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.

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

Affected products

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

References

LinkTags
http://www.openwall.com/lists/oss-security/2016/07/18/6 Mailing ListThird Party Advisory
https://github.com/klacke/yaws/commit/9d8fb070e782c95821c90d0ca7372fc6d7316c78#diff-54053c47eb173a90c26ed19bd9d106c1 PatchThird Party Advisory
https://raw.githubusercontent.com/distributedweaknessfiling/cvelist/master/2016/1000xxx/CVE-2016-1000108.json Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2016-1000108 Third Party Advisory
http://www.openwall.com/lists/oss-security/2016/07/18/6 Mailing ListThird Party Advisory
https://github.com/klacke/yaws/commit/9d8fb070e782c95821c90d0ca7372fc6d7316c78#diff-54053c47eb173a90c26ed19bd9d106c1 PatchThird Party Advisory
https://raw.githubusercontent.com/distributedweaknessfiling/cvelist/master/2016/1000xxx/CVE-2016-1000108.json Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2016-1000108 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2016-1000108), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.