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CVE-2016-6287

19
FAUCET Score

CVE-2016-6287 is a high-severity vulnerability affecting the "http-client" egg, specifically versions prior to 0.10, and the call_cc http_client. This vulnerability, known as "httpoxy," allows an attacker to direct all HTTP requests through a user-supplied proxy by manipulating the "Proxy" header when the application runs as a CGI process. With a CVSS score of 7.5, it poses a significant risk due to its network-based attack vector and high impact on integrity. While there is no evidence of active exploitation, Metasploit, Nuclei, or ExploitDB modules, it has received some community discussion, indicating awareness within the cybersecurity community.

Impacted Technologies

VendorProductVersion(s)CPE
<= 0.9CPE matchmatch criteria
cpe:2.3:a:call-cc:http-client:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 53rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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