CVE-2026-110381 WordPress Simply Schedule Appointments plugin <= 1.6.12.35 - Insecure Direct Object References (IDOR) vulnerability
Attackers can bypass access controls to read or modify appointment data by manipulating user-controlled keys in the Simply Schedule Appointments 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-2026-110381?
CVE-2026-110381 is a medium-severity missing authorization vulnerability in NSquared Simply Schedule Appointments, published on 15 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Authorization Bypass Through User-Controlled Key vulnerability in NSquared Simply Schedule Appointments simply-schedule-appointments allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects Simply Schedule Appointments: from n/a through 1.6.12.35.
Weakness: CWE-639
Which versions are affected by CVE-2026-110381?
How do I fix CVE-2026-110381?
No fix has been published for CVE-2026-110381 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-2026-110381 being exploited?
There is no known exploitation of CVE-2026-110381 in the wild and no public exploit code.
Sources
Also known as GHSA-rm4r-vvcj-whqr.