CVE-2020-10187

Name: CVE-2020-10187
Creator: NVD / NIST
Published: 2020-05-04T14:15:13.013+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 2.02%

Last modified Jun 17, 2026

CVE-2020-10187 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Doorkeeper version 5.0.0 and later contains an information disclosure vulnerability that allows an attacker to retrieve the client secret only intended for the OAuth application owner. After authorizing the application and allowing access, the attacker simply needs to request the list of their authorized applications in a JSON format (usually GET /oauth/authorized_applications.json). EPSS estimates a 2.02% chance of exploitation in the next 30 days.

Description

Doorkeeper version 5.0.0 and later contains an information disclosure vulnerability that allows an attacker to retrieve the client secret only intended for the OAuth application owner. After authorizing the application and allowing access, the attacker simply needs to request the list of their authorized applications in a JSON format (usually GET /oauth/authorized_applications.json). An application is vulnerable if the authorized applications controller is enabled.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

2.02%

78.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-862

Affected Software

Vendor	Product	Versions
Doorkeeper Project	Doorkeeper	>= 5.0.0, < 5.0.3
Doorkeeper Project	Doorkeeper	>= 5.1.0, < 5.1.1
Doorkeeper Project	Doorkeeper	>= 5.2.0, < 5.2.5
Doorkeeper Project	Doorkeeper	>= 5.3.0, < 5.3.2

References

https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6Patch, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper/releasesRelease Notes, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9Patch, Third Party Advisory
https://github.com/rubysec/ruby-advisory-db/pull/446Patch, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6Patch, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper/releasesRelease Notes, Third Party Advisory
https://github.com/doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9Patch, Third Party Advisory
https://github.com/rubysec/ruby-advisory-db/pull/446Patch, Third Party Advisory

Timeline

Published: May 4, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-10187?

How severe is CVE-2020-10187?

CVE-2020-10187 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.02% probability of exploitation in the next 30 days.

How do I fix CVE-2020-10187?

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-2020-10187?

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

Scan your code now

Source: NVD / NIST