Is CVE-2016-6582 in the CISA KEV catalog?

No. CVE-2016-6582 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-6582?

CVE-2016-6582 has a CVSS v3 base score of 9.1 (CRITICAL).

What is the EPSS score for CVE-2016-6582?

CVE-2016-6582 has an EPSS score of 4.69% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-6582?

Upgrade ruby-doorkeeper on debian 11 to 4.2.0-3 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2016-6582

CRITICALEPSS 91th pctl

9.1

CVSS v3

NVD

Description

The Doorkeeper gem before 4.2.0 for Ruby might allow remote attackers to conduct replay attacks or revoke arbitrary tokens by leveraging failure to implement the OAuth 2.0 Token Revocation specification.

CWE-254

How to fix

Remediation Available

ruby-doorkeeperDebian

Fixed in:4.2.0-3CVE-2016-6582

ruby-doorkeeperUbuntu

Fixed in:2.2.1-1ubuntu0.1~esm2USN-7394-1

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 InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

4.69%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Patch3

Third-Party Advisory2

Other references1

securityfocus.com

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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 2026-05-13.