---
id: CVE-2026-90977
title: >-
  The Clean Login WordPress plugin before 1.19 does not verify its registration
  CAPTCHA when the stored session value is empty, allowing unauthenticated users
  to bypass the anti-automation control on the registration form and create
  accoun…
summary: >-
  The Clean Login WordPress plugin before 1.19 does not verify its registration
  CAPTCHA when the stored session value is empty, allowing unauthenticated users
  to bypass the anti-automation control on the registration form and create
  accoun…
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-697
product: Clean Login
affected:
  - clean_login < 1.19
published: '2026-09-18'
updated: '2026-09-18'
sourceUpdated: '2026-09-18T19:08:32.830'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-90977'
references:
  - url: 'https://wpscan.com/vulnerability/368db83e-ed7b-4f67-99db-2e5f1c01568e/'
    label: contact@wpscan.com
tags:
  - nvd
  - cve.org
epss: 0.00374
epssPercentile: 0.28647
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-09-18T10:55:45.442683Z'
ingestedAt: '2026-09-18T06:36:37.989Z'
---

## Overview

The Clean Login WordPress plugin before 1.19 does not verify its registration CAPTCHA when the stored session value is empty, allowing unauthenticated users to bypass the anti-automation control on the registration form and create accounts without solving it.

## Remediation

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