# CVE-2019-9837: Doorkeeper-openid_connect contains Open Redirect

Source: https://junglewise.ai/threats/cve-2019-9837-doorkeeper-openid-connect-contains-open-redirect  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2019-03-25  
License: CC BY 4.0 with a link back

CVE-2019-9837 · Severity: low · CVSS 3 · Published 2019-03-25

Doorkeeper-openid_connect contains Open Redirect

Technologies: [doorkeeper-openid_connect (RubyGems)](https://junglewise.ai/threats/technologies/doorkeeper-openid-connect). Vendors: [RubyGems](https://junglewise.ai/threats/vendors/rubygems).

## Quick answers

**Is CVE-2019-9837 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2019-9837 being exploited in the wild.

**How severe is CVE-2019-9837?** Low severity, with a CVSS score of 3, published 25 March 2019.

**Which products and versions are affected?** doorkeeper-openid_connect (RubyGems) ECOSYSTEM:introduced=1.4.0,fixed=1.5.4.

**Is there a fix for CVE-2019-9837?** Yes. doorkeeper-openid_connect (RubyGems): upgrade to 1.5.4 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**Am I affected by CVE-2019-9837?** Check whether you run doorkeeper-openid_connect (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

- doorkeeper-openid_connect (RubyGems): upgrade to 1.5.4 or later

  ```sh
  bundle update doorkeeper-openid_connect
  ```


## Affected products

- doorkeeper-openid_connect (RubyGems) ECOSYSTEM:introduced=1.4.0,fixed=1.5.4

## Identifiers

- CVE-2019-9837
- GHSA-vv4c-g6q7-p3q7

## Related threats

- [Doorkeeper OpenID Connect authentication bypass in Dynamic Client Registration](https://junglewise.ai/threats/cve-2026-44476-doorkeeper-openid-connect-authentication-bypass-in-dynamic-client)