---
id: CVE-2026-18345
title: >-
  The WP User Manager plugin for WordPress is vulnerable to unauthorized
  modification of data due to a missing capability check on the
  Connect::complete() function in versions up to, and including, 2.9.18
summary: >-
  The WP User Manager plugin for WordPress is vulnerable to unauthorized
  modification of data due to a missing capability check on the
  Connect::complete() function in versions up to, and including, 2.9.18. The
  function is registered on the…
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-862
vendor: wpusermanager
product: WP User Manager – User Profile Builder & Membership
affected:
  - wp_user_manager_user_profile_builder_membership <= 2.9.18
published: '2026-09-22'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:04:55.677'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18345'
references:
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L177
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L203
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/browser/wp-user-manager/tags/2.9.18/includes/integrations/stripe/Connect.php#L21
    label: security@wordfence.com
  - url: >-
      https://plugins.trac.wordpress.org/changeset?reponame=&old=3701837%40wp-user-manager&new=3701837%40wp-user-manager
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/ecae11ec-c952-4f5a-9e55-e2ac2fa05100?source=cve
    label: security@wordfence.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T10:08:21.139344Z'
ingestedAt: '2026-09-22T08:00:27.693Z'
epss: 0.00196
epssPercentile: 0.09599
---

## Overview

The WP User Manager plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the Connect::complete() function in versions up to, and including, 2.9.18. The function is registered on the admin_init hook (which fires for every authenticated user that reaches /wp-admin/, including Subscribers) and performs no current_user_can() or nonce verification before fetching Stripe credentials from the external WPUM connect service and writing them (publishable key, secret key, gateway mode, and connected Stripe account ID) into the wpum_settings option via wpum_update_option()/update_option(). This makes it possible for authenticated attackers, with Subscriber-level access and above, to hijack the site's Stripe integration by completing their own Stripe Connect OAuth flow and then invoking the callback on the target site, causing all subsequent Stripe payments to be routed to the attacker's Stripe account.

## Remediation

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