CVE-2019-9837

Name: CVE-2019-9837
Creator: NVD / NIST
Published: 2019-03-21T16:01:17.28+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.35%

Last modified Jun 17, 2026

CVE-2019-9837 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.35% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability

1.35%

67.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-601

Affected Software

Vendor	Product	Versions
Openid	Openid Connect	>= 1.4.0, < 1.5.4

References

https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.mdThird Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66Patch, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/blob/master/CHANGELOG.mdThird Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/issues/61Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper-openid_connect/pull/66Patch, Third Party Advisory

Timeline

Published: Mar 21, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-9837?

How severe is CVE-2019-9837?

Severity scoring for CVE-2019-9837 is pending analysis. The EPSS model estimates a 1.35% probability of exploitation in the next 30 days.

How do I fix CVE-2019-9837?

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-2019-9837?

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

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Source: NVD / NIST