---
id: CVE-2026-103900
title: >-
  WPJAM Basic <= 7.1 - Unauthenticated Privilege Escalation to
  'data[args][role]' Parameter
summary: >-
  The WPJAM Basic plugin for WordPress is vulnerable to Privilege Escalation in
  versions up to, and including, 7.1 This is due to the
  WPJAM_User_Signup::signup() function unpacking attacker-supplied `data[args]`
  from the AJAX POST body and…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H'
cvssSource: cna
cwe:
  - CWE-269
vendor: denishua
product: WPJAM Basic
affected:
  - wpjam_basic <= 7.1
published: '2026-11-07'
updated: '2026-11-07'
sourceUpdated: '2026-11-07T09:25:47.227Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-103900'
references:
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/77464287-bbaa-428e-9292-c97c10733adf?source=cve
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1313
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1302
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1155
  - url: >-
      https://plugins.trac.wordpress.org/browser/wpjam-basic/trunk/includes/class-wpjam-core.php#L1396
  - url: 'https://wordpress.org/plugins/wpjam-basic/'
tags:
  - cve.org
ingestedAt: '2026-11-07T10:14:53.601Z'
epss: 0.00571
epssPercentile: 0.47474
---

## Overview

The WPJAM Basic plugin for WordPress is vulnerable to Privilege Escalation in versions up to, and including, 7.1 This is due to the WPJAM_User_Signup::signup() function unpacking attacker-supplied `data[args]` from the AJAX POST body and merging it via PHP array union into the payload passed to WPJAM_User::create(), whose internal whitelist (wpjam_pick) explicitly preserves the `role` key before it is handed to wp_insert_user(). The endpoint is registered as wp_ajax_nopriv_{provider}-signup with a nonce that is emitted on the public login page. This makes it possible for unauthenticated attackers to elevate their privileges to Administrator by creating a new user with an attacker-chosen role, provided a social-login provider is registered and open registration is enabled.

## Affected

- `wpjam_basic <= 7.1`

## Remediation

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