getkirby — Vulnerabilities & Security Advisories 29

GetKirby is a flat-file CMS designed for web developers, utilizing PHP and YAML to manage content without a database. Its architecture, while simplifying deployment, has historically exposed it to significant security risks, resulting in twenty-five recorded CVEs. The most prevalent vulnerability classes involve Remote Code Execution (RCE) and Cross-Site Scripting (XSS), often stemming from insufficient input validation in file handling and template rendering processes. Privilege escalation flaws have also been documented, allowing unauthorized users to gain administrative access. A notable incident involved a critical RCE vulnerability in the panel’s file upload functionality, which permitted attackers to execute arbitrary code on the server. These issues highlight the challenges of maintaining security in flat-file systems where traditional database protections are absent, necessitating rigorous code auditing and strict access controls to mitigate the inherent risks associated with its design philosophy.