CVE-2016-6286

Severity: high (CVSS 7.5 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2017-01-10 · updated 2026-06-17
Weakness: CWE-19

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.

Affected products

Call-Cc Http-Client: through 0.4.2

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

Get alerted when CVE-2016-6286 or the next vulnerability affects your stack