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MEDIUM

CVE-2018-20170

CVSS v3

5.3

MEDIUM

EPSS Score

1.1 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

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Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • keystonePyPIall versions · fixed in 14.1.0

Full record on NVD

Description

OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory

Technical details

Published
2018-12-17

Frequently asked questions

What is CVE-2018-20170?

OpenStack Keystone through 14.0.1 has a user enumeration vulnerability because invalid usernames have much faster responses than valid ones for a POST /v3/auth/tokens request. NOTE: the vendor's position is that this is a hardening opportunity, and not necessarily an issue that should have an OpenStack Security Advisory

Is CVE-2018-20170 actively exploited?

Active exploitation of CVE-2018-20170 has not been confirmed. Its EPSS score was 1.1% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-20170?

CVE-2018-20170 has a CVSS v3 base score of 5.3 (MEDIUM severity).

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