kkcal — Vulnerabilities & Security Advisories 3

kkcal is a web-based calendar application primarily used for scheduling and event management. Historically, it has been vulnerable to multiple remote code execution (RCE) and cross-site scripting (XSS) flaws, often stemming from improper input validation and insecure direct object references. The application has also exhibited privilege escalation vulnerabilities due to weak access controls. Notable security characteristics include its susceptibility to injection attacks and insufficient session management, with three CVEs documenting these issues. While no major public incidents have been widely reported, the consistent pattern of vulnerabilities suggests a need for rigorous security testing before deployment in sensitive environments.