CVE-2026-15930 Simple Membership < 4.7.8 - Unauthenticated Administrator Account Takeover via Registration Username Collision
Unauthenticated attackers can take over the administrator account by exploiting a username collision flaw during user registration in the Simple Membership plugin.
- 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-2026-15930?
CVE-2026-15930 is a critical vulnerability in Unknown Simple Membership, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Simple Membership WordPress plugin before 4.7.8 does not verify whether user creation failed during registration before using the returned value as a user ID to update an account, allowing unauthenticated attackers to overwrite the primary administrator's account data (including the email address) and take over that account through the password reset flow.
Weakness: CWE-862
Which versions are affected by CVE-2026-15930?
How do I fix CVE-2026-15930?
No fix has been published for CVE-2026-15930 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15930 being exploited?
There is no known exploitation of CVE-2026-15930 in the wild and no public exploit code.
Sources
Also known as GHSA-7g75-5pmj-3v8p.