Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2016-9015

18
FAUCET Score

CVE-2016-9015 affects urllib3 versions 1.17 and 1.18, where specific configurations involving PyOpenSSL and OpenSSL 1.1.0 can lead to improper TLS certificate validation. This vulnerability, rated CVSS 3.7 LOW, has a high attack complexity and could result in information leakage via man-in-the-middle attacks, but only impacts a very uncommon configuration. There is no evidence of active exploitation, no public exploit code (Metasploit, Nuclei, ExploitDB), and minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
1.17CPE matchmatch criteria
cpe:2.3:a:python:urllib3:1.17:*:*:*:*:*:*:*
1.18CPE matchmatch criteria
cpe:2.3:a:python:urllib3:1.18:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

3.7LOW

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.2
Impact Score
1.4
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.78%
Probability of exploitation in next 30 days
EPSS Percentile
52.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0077 is in the 32nd percentile among its peer group of 1,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

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

Remediation

Patch Available

Vendor Patches (1)

pippatch availablevia ghsa
Product: urllib3Fixed in: 1.18.1

Vendor Advisories (1)

pipGHSA-v4w5-p2hg-8fh6medium

Urllib3 Incorrect Certificate Validation

May 17, 2022

References

openwall.com / lists/oss-security/2016/10/27/6
Mailing ListMitigation
securityfocus.com / bid/93941
Third Party AdvisoryVDB Entry