---
id: CVE-2024-21671
aliases:
  - GHSA-45gq-q4xh-cp53
  - PYSEC-2024-31
  - PYSEC-2026-2008
title: vantage6 vulnerable to username timing attack
summary: vantage6 vulnerable to username timing attack
severity: low
cvss: 3.7
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N'
vendor: vantage6-server
product: vantage6-server
ecosystem: pip
affected:
  - vantage6-server < 4.2.0
patched:
  - vantage6-server 4.2.0
published: '2024-01-30'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-45gq-q4xh-cp53'
references:
  - url: >-
      https://github.com/vantage6/vantage6/security/advisories/GHSA-45gq-q4xh-cp53
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-21671'
  - url: >-
      https://github.com/vantage6/vantage6/commit/389f416c445da4f2438c72f34c3b1084485c4e30
  - url: >-
      https://github.com/pypa/advisory-database/tree/main/vulns/vantage6/PYSEC-2024-31.yaml
  - url: 'https://github.com/vantage6/vantage6'
tags:
  - osv
  - pip
epss: 0.00401
epssPercentile: 0.34181
ingestedAt: '2026-07-08T18:25:45.253Z'
---

## Overview

### Impact
It is possible to find out usernames from the response time of login requests. This could aid attackers in credential attacks

### Workarounds
No


## Affected packages

- `vantage6-server < 4.2.0`

## Remediation

Upgrade to a patched release:

- `vantage6-server 4.2.0`