---
id: CVE-2022-34530
title: >-
  An issue in the login and reset password functionality of Backdrop CMS v1.22.0
  allows attackers to enumerate usernames via password reset requests and
  distinct responses returned based on usernames.
summary: >-
  An issue in the login and reset password functionality of Backdrop CMS v1.22.0
  allows attackers to enumerate usernames via password reset requests and
  distinct responses returned based on usernames.
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-640
vendor: backdropcms
product: backdrop_cms
affected:
  - backdrop_cms <= 1.22.0
published: '2022-08-01'
updated: '2026-07-05'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-34530'
references:
  - url: 'https://github.com/Accenture/AARO-Bugs/blob/master/AARO-CVE-List.md'
    label: cve@mitre.org
  - url: 'http://backdrop.com'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://github.com/Accenture/AARO-Bugs/blob/master/AARO-CVE-List.md'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.00604
epssPercentile: 0.47608
ingestedAt: '2026-07-06T17:03:24.865Z'
---

## Overview

An issue in the login and reset password functionality of Backdrop CMS v1.22.0 allows attackers to enumerate usernames via password reset requests and distinct responses returned based on usernames.

## Affected

- `backdrop_cms <= 1.22.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.