CVE-2016-11086

Name: CVE-2016-11086
Creator: NVD / NIST
Published: 2020-09-24T20:15:12.257+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.4/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2016-11086 is a high-severity vulnerability rated 7.4/10 on the CVSS scale. lib/oauth/consumer.rb in the oauth-ruby gem through 0.5.4 for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information.. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

lib/oauth/consumer.rb in the oauth-ruby gem through 0.5.4 for Ruby does not verify server X.509 certificates if a certificate bundle cannot be found, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information.

Metrics

CVSS 3.1

7.4/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS Probability

0.75%

50.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-295

Affected Software

Vendor	Product	Versions
Oauth-Ruby Project	Oauth-Ruby	<= 0.5.4

References

https://github.com/oauth-xx/oauth-ruby/issues/137Exploit, Third Party Advisory
https://github.com/oauth-xx/oauth-ruby/issues/137Exploit, Third Party Advisory

Timeline

Published: Sep 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2016-11086?

How severe is CVE-2016-11086?

CVE-2016-11086 has a CVSS score of 7.4/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2016-11086?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2016-11086?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST