CVE-2026-81583 Theme My Login 7.0 - 7.1.15 - Subscriber+ Unauthorised Multisite Site Creation and Privilege Escalation
Attackers can create unauthorized sites and gain administrator privileges on multisite WordPress installations using the Theme My Login plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-81583?
CVE-2026-81583 is a medium-severity vulnerability in Unknown Theme My Login, published on 2 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The My Login WordPress plugin before 7.2.0 does not enforce the network's registration setting when processing site signups on multisite installations, allowing users with a subscriber account, and unauthenticated users on some networks, to create new sites and be granted administrator over them.
Weakness: CWE-269
Which versions are affected by CVE-2026-81583?
How do I fix CVE-2026-81583?
No fix has been published for CVE-2026-81583 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-81583 being exploited?
There is no known exploitation of CVE-2026-81583 in the wild and no public exploit code.
Sources
Also known as GHSA-rx7v-j56c-vf8f.