# CVE-2016-11086: Improper Certificate Validation in oauth ruby gem

Source: https://junglewise.ai/threats/cve-2016-11086-improper-certificate-validation-in-oauth-ruby-gem  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2021-04-22  
License: CC BY 4.0 with a link back

CVE-2016-11086 · Severity: low · CVSS 3.1 · Published 2021-04-22

Improper Certificate Validation in oauth ruby gem

Technologies: [oauth (RubyGems)](https://junglewise.ai/threats/technologies/oauth). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2016-11086 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2016-11086 being exploited in the wild.

**How severe is CVE-2016-11086?** Low severity, with a CVSS score of 3.1, published 22 April 2021.

**Which products and versions are affected?** oauth (RubyGems) ECOSYSTEM:introduced=0,fixed=0.5.5.

**Is there a fix for CVE-2016-11086?** Yes. oauth (RubyGems): upgrade to 0.5.5 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2016-11086?** Check whether you run oauth (RubyGems) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- oauth (RubyGems): upgrade to 0.5.5 or later

  ```sh
  bundle update oauth
  ```


## Affected products

- oauth (RubyGems) ECOSYSTEM:introduced=0,fixed=0.5.5

## Identifiers

- CVE-2016-11086
- GHSA-7359-3c6r-hfc2

## Related threats

- [Ruby OAuth cross-origin metadata disclosure in token_request](https://junglewise.ai/threats/cve-2026-54605-ruby-oauth-cross-origin-metadata-disclosure-in-token-request)