CVE-2026-18466 WP Maps < 4.9.8 - Subscriber+ Unlimited Autoloaded Option Creation
Subscribers can create unlimited autoloaded options via an unprotected AJAX action, causing performance degradation and database bloat.
- 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-2026-18466?
CVE-2026-18466 is a medium-severity missing authorization vulnerability in Unknown WP Maps, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The WP Maps WordPress plugin before 4.9.8 does not perform a capability check, nor validate a nonce, in one of its AJAX actions, allowing users with a Subscriber account to create an unlimited number of options in the database, each of which is loaded on every page request.
Weakness: CWE-284
Which versions are affected by CVE-2026-18466?
How do I fix CVE-2026-18466?
No fix has been published for CVE-2026-18466 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-18466 being exploited?
There is no known exploitation of CVE-2026-18466 in the wild and no public exploit code.
Sources
Also known as GHSA-qv3g-6665-8589.