WordPress plugin

MemberDash <= 1.8.5 — Unauthenticated Account Takeover via Insecure Direct Object Reference via 'id' Parameter

CVE-2026-16310Published Sep 5, 2026 · Updated Nov 13, 2026

Affected: ≤1.8.5Update to 1.8.6 or newer

All remediation steps

Watch plugin

Severity

Critical9.8

CVSS

9.8

CVSS 3.1 · CNA (Wordfence)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

What does this vector mean?

AV:N Attack vector: Network
AC:L Attack complexity: Low
PR:N Privileges required: None
UI:N User interaction: None
S:U Scope: Unchanged
C:H Confidentiality: High
I:H Integrity: High
A:H Availability: High

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

Required access

No account needed

Exploit prediction (EPSS)

No score

CISA KEV

Not listed

On this page7

Am I affected?

MemberDash memberdash

Affected≤ 1.8.5
Patched in1.8.6

You are affected if you run ≤ 1.8.5. Version 1.8.6 and later are not affected by this issue.

Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under MemberDash.
No admin access? Run a passive check of your site. It reads public files only.
No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

Update to version 1.8.6, or a newer patched version
Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
Watch MemberDash to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Foxyyy.

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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

Advisorywordfence.com

Timeline

Sep 5, 2026
CVE published
Severity critical, CVSS 9.8
Nov 13, 2026
Record last updated

Sources & licenses

Wordfence record

Vulnerability data: Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
CVE® identifiers: Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE: National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.

How we use these sources