AUGUST 4, 2026
Live Feed
Back to database
Case File

CVE-2021-38155

HIGH · CVSS 7.5 EPSS 2.46%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-08-06 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2021-38155
Severity
HIGH
CVSS
7.5
EPSS
2.46%

Original NVD Description

OpenStack Keystone 10.x through 16.x before 16.0.2, 17.x before 17.0.1, 18.x before 18.0.1, and 19.x before 19.0.1 allows information disclosure during account locking (related to PCI DSS features). By guessing the name of an account and failing to authenticate multiple times, any unauthenticated actor could both confirm the account exists and obtain that account's corresponding UUID, which might be leveraged for other unrelated attacks. All deployments enabling security_compliance.lockout_failure_attempts are affected.

Related CVEs

Other vulnerabilities affecting the same vendor(s)