CVE-2019-11489: Simplybook

High severity, CVSS 8.8. EPSS: 2.5% chance of exploitation in the next 30 days.

Incorrect Access Control in the Administrative Management Interface in SimplyBook.me Enterprise before 2019-04-23 allows Authenticated Low-Priv Users to Elevate Privileges to Full Admin Rights via a crafted HTTP PUT Request, as demonstrated by modified JSON data to a /v2/rest/ URI.

Affected products

• Simplybook Simplybook: before 2019-04-23 (fixed in 2019-04-23)

Published 2019-04-25. Last modified 2026-06-17.