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CVE-2020-10187

20
FAUCET Score

CVE-2020-10187 is an information disclosure vulnerability in Doorkeeper versions 5.0.0 and later, allowing an attacker to retrieve an OAuth application's client secret. This high-severity vulnerability (CVSS 7.5) has a low attack complexity and can be exploited by an unauthenticated attacker to gain access to sensitive information. While there is no known active exploitation or public exploit code, the vulnerability has received some community attention and media coverage, indicating its potential impact.

Impacted Technologies

VendorProductVersion(s)CPE
>= 5.0.0, < 5.0.3CPE matchmatch criteria
cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*
>= 5.1.0, < 5.1.1CPE matchmatch criteria
cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*
>= 5.2.0, < 5.2.5CPE matchmatch criteria
cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*
>= 5.3.0, < 5.3.2CPE matchmatch criteria
cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
2.02%
Probability of exploitation in next 30 days
EPSS Percentile
78.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0202 is in the 63rd percentile among its peer group of 51,485 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

github_advisorypatch availablevia nvd_reference
View patch
rubygemspatch availablevia ghsa
Product: doorkeeperFixed in: 5.0.3
rubygemspatch availablevia ghsa
Product: doorkeeperFixed in: 5.1.1
rubygemspatch availablevia ghsa
Product: doorkeeperFixed in: 5.2.5
rubygemspatch availablevia ghsa
Product: doorkeeperFixed in: 5.3.2

Vendor Advisories (1)

rubygemsGHSA-j7vx-8mqj-cqp9high

Exposure of Sensitive Information to an Unauthorized Actor in Doorkeeper

May 7, 2020

References

github.com / doorkeeper-gem/doorkeeper/commit/25d038022c2fcad45af5b73f9d003cf38ff491f6
PatchThird Party Advisory
github.com / doorkeeper-gem/doorkeeper/releases
Release NotesThird Party Advisory
github.com / doorkeeper-gem/doorkeeper/security/advisories/GHSA-j7vx-8mqj-cqp9
PatchThird Party Advisory
github.com / rubysec/ruby-advisory-db/pull/446
PatchThird Party Advisory