6.1

CVE-2019-9837: openid openid_connect Open Redirect

CVSS: 6.1v3.0MediumModified
AliasesDEBIAN-CVE-2019-9837GHSA-vv4c-g6q7-p3q7
Published 15-03-2019Last modified 04-08-2024
Open JSON

Vulnerability summary

CVE-2019-9837 is a medium (CVSS 6.1) Open Redirect vulnerability in openid openid_connect. EPSS estimates a 1.35% chance of exploitation in the next 30 days, higher than 71% of scored vulnerabilities.

Overall risk
25/100
0100
Medium · default modelHow is this calculated?
CVSS score
6.1/10
010
Medium · v3.0 (NVD)
EPSS score
1.35%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 15-03-2019
    PublishedVulnerability first disclosed.
  2. 04-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

1.35%

Chance of exploitation in the next 30 days

Percentile

71%

Versus all other CVEs

30-day change

0.00 pp

From 1.35% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.35%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Debian1 product
  • ruby-doorkeeper-openid-connect< 1.5.5-1
Openid1 product
RubyGems1 product
  • doorkeeper-openid_connect≥ 1.4.0, < 1.5.4

3 vendors · 3 products

References

6 links