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CVE-2018-1000211

25
FAUCET Score

CVE-2018-1000211 describes an Incorrect Access Control vulnerability in Doorkeeper versions 4.2.0 and later, specifically within the Token revocation API's authorized method. This flaw prevents access tokens from being properly revoked for public OAuth applications, allowing them to remain active until their natural expiry. With a CVSS score of 7.5 (HIGH), this vulnerability is easily exploitable over the network with low complexity and no user interaction, potentially leading to unauthorized access to sensitive information. There is currently no evidence of active exploitation, nor are there publicly available exploit tools like Metasploit or Nuclei, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.2.0CPE matchmatch criteria
cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

CVSS:3.0/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
3.0

Exploit Intelligence

EPSS Score
1.61%
Probability of exploitation in next 30 days
EPSS Percentile
73.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0161 is in the 56th percentile among its peer group of 51,485 CVEs.

Social Chatter

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

No media coverage found for this CVE.

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 (1)

rubygemspatch availablevia ghsa
Product: doorkeeperFixed in: 4.4.0

Vendor Advisories (1)

rubygemsGHSA-694m-jhr9-pf77high

Doorkeeper subject to Incorrect Permission Assignment

Aug 13, 2018

References

github.com / doorkeeper-gem/doorkeeper/issues/891
Third Party Advisory
github.com / doorkeeper-gem/doorkeeper/pull/1119
Third Party Advisory