CVE-2026-16310 MemberDash <= 1.8.5 - Unauthenticated Account Takeover via Insecure Direct Object Reference via 'id' Parameter
Unauthenticated attackers can take over any WordPress user account, including administrators, by manipulating the user ID during registration.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-16310?
CVE-2026-16310 is a critical authentication bypass vulnerability in LearnDash MemberDash, published on 6 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-639
Which versions are affected by CVE-2026-16310?
How do I fix CVE-2026-16310?
No fix has been published for CVE-2026-16310 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-16310 being exploited?
There is no known exploitation of CVE-2026-16310 in the wild and no public exploit code.
Sources
Also known as GHSA-2rc8-vf7f-v3hx.