---
id: CVE-2026-16310
title: >-
  The MemberDash plugin for WordPress is vulnerable to Insecure Direct Object
  Reference in all versions up to, and including, 1.8.5 via the 'id' parameter
  due to missing validation on a user controlled key
summary: >-
  The MemberDash plugin for WordPress is vulnerable to Insecure Direct Object
  Reference in all versions up to, and including, 1.8.5 via the 'id' parameter
  due to missing validation on a user controlled key. This makes it possible for
  unaut…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-639
published: '2026-09-06'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T13:12:58.310'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16310'
references:
  - url: 'https://www.memberdashwp.com'
    label: security@wordfence.com
  - url: >-
      https://www.wordfence.com/threat-intel/vulnerabilities/id/222e0f27-f269-4751-9544-1a6cb03ab3a7?source=cve
    label: security@wordfence.com
tags:
  - nvd
epss: 0.00301
epssPercentile: 0.20397
ingestedAt: '2026-09-06T15:57:04.731Z'
---

## Overview

The MemberDash plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 1.8.5 via the 'id' parameter due to missing validation on a user controlled key. This makes it possible for unauthenticated attackers to change the password of any WordPress user, including administrators, by supplying an arbitrary user ID during registration, and take over their account without any notification sent to the victim.

## Remediation

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