Vulnerability · Published Oct 15, 2026 · Assigned by Patchstack
CVE-2026-110381WordPress Simply Schedule Appointments plugin <= 1.6.12.35 - Insecure Direct Object References (IDOR) vulnerability
Medium 6.3
In plain English
A medium-severity authorization bypass via user-controlled key in Simply Schedule Appointments from NSquared. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 10% of all known vulnerabilities).
Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.2%top 89.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| NSquared | Simply Schedule Appointments | 0 – through 1.6.12.35 |
Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L