CVE-2026-16310Critical· 9.8▾ Midnight

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

▾ Midnight zone — Critical, or high with PoC / in-the-wild

Depth score54/ 100 · Moderate

impact 53.9 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Sep 6, 2026

Updated

Sep 8, 2026

CVSS

9.8

Vendor

—

Product

—

CWE

CWE-639

Depth score

54 · Moderate

EPSS

0.51% · p44

Platforms

—

Source

NVD

Vector

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

EPSS history

Exploit-prediction probability, daily snapshots since Sep 6.

0.3% → 0.5%▲ 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 50 days

Sep 6, 2026Published
Disclosed via NVD
Sep 6, 2026EPSS first tracked
0.3%
Sep 8, 2026Record revised
Last analysed / modified upstream
Oct 26, 2026EPSS peak
0.3% → 0.5%

CWE-639 #nvd

Full technical detail▾

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.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd

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