CVE-2016-6286

HIGH 7.5CVE-2016-6286 · Published 10/01/2017 · updated 17/06/2026

In short

CVE-2016-6286 is a HIGH (CVSS 7.5) vulnerability affecting http-client (call-cc).
Chance of exploitation in the next 30 days (EPSS): 1.5%, higher than 73.9% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
http-client call-cc	`≤ 0.4.2`	No fix yet

Description

The "spiffy-cgi-handlers" egg would convert a nonexistent "Proxy" header to the HTTP_PROXY environment variable, which would allow attackers to direct CGI programs which use this environment variable to use an attacker-specified HTTP proxy server (also known as a "httpoxy" attack). This affects all versions of spiffy-cgi-handlers before 0.5.

References

lists.gnu.org/archive/html/chicken-announce/2016-07/msg00000.html · Mitigation
securityfocus.com/bid/92105 · Third Party Advisory

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