Vulnerability · Published Sep 6, 2026 · Assigned by Wordfence

CVE-2026-16310MemberDash <= 1.8.5 - Unauthenticated Account Takeover via Insecure Direct Object Reference via 'id' Parameter

Critical 9.8

In plain English

A critical-severity authorization bypass via user-controlled key in MemberDash from LearnDash. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 44% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.5%top 56.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
LearnDash	MemberDash	0 – through 1.8.5

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

In plain English

Official description

Affected products (as reported)

References