How severe is CVE-2016-6582?

CVE-2016-6582 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2016-6582 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2016-6582?

CVE-2016-6582 affects Doorkeeper Project Doorkeeper. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2016-6582?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2016-6582 published?

CVE-2016-6582 was published on 2017-01-23 and last updated on 2026-06-17.

CVE-2016-6582

CVE-2016-6582 is a critical-severity vulnerability in Doorkeeper Project Doorkeeper with a CVSS 3.x base score of 9.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-254.

Key facts

Severity: Critical (CVSS 3.x base score 9.1)
CVSS v2: 6.4
EPSS exploit prediction: 5% (91st percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Doorkeeper Project Doorkeeper
Published: 2017-01-23
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2016-6582?: 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.
How severe is CVE-2016-6582?: CVE-2016-6582 has a CVSS 3.x base score of 9.1, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2016-6582 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (91st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-6582?: CVE-2016-6582 affects Doorkeeper Project Doorkeeper. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-6582?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-6582 published?: CVE-2016-6582 was published on 2017-01-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:doorkeeper_project:doorkeeper:*:*:*:*:*:ruby:*:*

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