https://patchthecve.com/CVEs with upgrade or downgrade fix stepshttps://patchthecve.com/cve/CVE-2019-11887.htmlhttps://patchthecve.com/cve/CVE-2019-11887.htmlWed, 17 Jun 2026 02:13:48 +0000CRITICAL 9.8: SimplyBook.me through 2019-05-11 does not properly restrict File Upload which could allow remote code execution.https://patchthecve.com/cve/CVE-2019-11489.htmlhttps://patchthecve.com/cve/CVE-2019-11489.htmlWed, 17 Jun 2026 02:13:00 +0000HIGH 8.8: 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.https://patchthecve.com/cve/CVE-2019-11488.htmlhttps://patchthecve.com/cve/CVE-2019-11488.htmlWed, 17 Jun 2026 02:13:00 +0000HIGH 8.1: Incorrect Access Control in the Account Access / Password Reset Link in SimplyBook.me Enterprise before 2019-04-23 allows Unauthorized Attackers to READ/WRITE Customer or Administrator data via a persistent HTTP GET Request Hash Link Replay, as demonstrated by a login-link from the browser history.