How severe is CVE-2016-11086?

CVE-2016-11086 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2016-11086 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-11086?

CVE-2016-11086 affects Oauth-ruby Project Oauth-ruby. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-11086?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2016-11086 published?

CVE-2016-11086 was published on 2020-09-24 and last updated on 2026-06-17.

CVE-2016-11086

CVE-2016-11086 is a high-severity vulnerability in Oauth-ruby Project Oauth-ruby with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-295.

Key facts

Severity: High (CVSS 3.x base score 7.4)
CVSS v2: 5.8
EPSS exploit prediction: 1% (50th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-295
Affected product: Oauth-ruby Project Oauth-ruby
Published: 2020-09-24
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2016-11086?: 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.
How severe is CVE-2016-11086?: CVE-2016-11086 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2016-11086 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (50th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-11086?: CVE-2016-11086 affects Oauth-ruby Project Oauth-ruby. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-11086?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2016-11086 published?: CVE-2016-11086 was published on 2020-09-24 and last updated on 2026-06-17.

References

https://github.com/oauth-xx/oauth-ruby/issues/137

Affected products (1)

cpe:2.3:a:oauth-ruby_project:oauth-ruby:*:*:*:*:*:ruby:*:*

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