CVE-2016-6287

7.5 highEPSS 1.5%

The "http-client" egg always used a HTTP_PROXY environment variable to determine whether HTTP traffic should be routed via a proxy, even when running as a CGI process. Under several web servers this would mean a user-supplied "Proxy" header could allow an attacker to direct all HTTP requests through a proxy (also known as a "httpoxy" attack). This affects all versions of http-client before 0.10.

Severity

CVSS 3.0

7.5 high

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

EPSS: 1.5% chance of exploitation in the next 30 days; higher than 73% of CVEs (scores of 2026-10-31)
CWE: CWE-19
Published: 2017-01-10
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

call-cc:http-client

References

http://lists.gnu.org/archive/html/chicken-announce/2016-07/msg00000.html
http://www.securityfocus.com/bid/92105
http://lists.gnu.org/archive/html/chicken-announce/2016-07/msg00000.html
http://www.securityfocus.com/bid/92105

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