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CVE-2019-9837 — Vulnerability in doorkeeper-openid_connect — CVE...

MEDIUM

Doorkeeper-openid_connect contains Open Redirect

Published March 25, 2019Updated November 8, 2023Source: osv

Summary

Doorkeeper::OpenidConnect (aka the OpenID Connect extension for Doorkeeper) 1.4.x and 1.5.x before 1.5.4 has an open redirect via the redirect_uri field in an OAuth authorization request (that results in an error response) with the 'openid' scope and a prompt=none value. This allows phishing attacks against the authorization flow.

Advisory Timeline

  • First published March 25, 2019 (2758 days ago).
  • Last revised November 8, 2023 — 1688 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update doorkeeper-openid_connect to 1.5.4 or later
gem install doorkeeper-openid_connect -v 1.5.4

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: rubygems (1).

PackageEcosystemAffectedFixed In
doorkeeper-openid_connect
rubygems
1.4.0, 1.5.0, 1.5.1, 1.5.2 (+1 more)1.5.4

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 6.1 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
None

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

References

Frequently Asked Questions

What is CVE-2019-9837?
Doorkeeper-openid_connect contains Open Redirect This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 6.1/10).
How do I check if my project is affected by CVE-2019-9837?
CVE-2019-9837 affects doorkeeper-openid_connect. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-9837 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
6.1

Exploitation requires specific conditions or has limited impact. Remediate within weeks.

Also Known As

GHSA-vv4c-g6q7-p3q7

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  • CVE-2026-44476
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    Doorkeeper Openid Connect: Dynamic Client Registration feature creates public clients with client_secret

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