Provide references for CVE-2019-11489.
Where can I find more information about CVE-2019-11489?
References are available at: https://cybrgrade.com/files/Report_SimplyBookIt_Privesc_by_CybrGradeUKLtd.pdf, https://blog.cybrgrade.com/CVE-2019-11489-SimplyBook.me-privesc/.