Is CVE-2019-9837 in the CISA KEV catalog?

No. CVE-2019-9837 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-9837?

CVE-2019-9837 has a CVSS v3 base score of 6.1 (MEDIUM).

What is the EPSS score for CVE-2019-9837?

CVE-2019-9837 has an EPSS score of 1.35% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-9837?

Upgrade ruby-doorkeeper-openid-connect on debian 11 to 1.5.5-1 or later.

CVE & CISA-KEV Catalog

CVE-2019-9837

MEDIUM

6.1

CVSS v3

NVD

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.

CWE-601Open Redirect

How to fix

Remediation Available

ruby-doorkeeper-openid-connectDebian

Fixed in:1.5.5-1CVE-2019-9837

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionRequired

ScopeChanged

Impact

ConfidentialityLow

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.35%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory2

Related Vulnerabilities

Other CWE-601 (Open Redirect) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-4123	High	7.6	98%	-	Fix
CVE-2018-11784	Medium	4.3	94%	-	Fix
CVE-2021-22881	Medium	6.1	87%	-	Fix
CVE-2022-45402	Medium	6.1	82%	-	Fix
CVE-2017-1000117	High	8.8	78%	-	Fix
CVE-2019-10098	Medium	6.1	74%	-	Fix

Embed a live status badge for CVE-2019-9837

Markdown

[![CVE-2019-9837](https://tridentstack.com/cve/badge/CVE-2019-9837.svg)](https://tridentstack.com/cve/CVE-2019-9837)

HTML

<a href="https://tridentstack.com/cve/CVE-2019-9837"><img src="https://tridentstack.com/cve/badge/CVE-2019-9837.svg" alt="CVE-2019-9837"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.