CVE-2023-36822
MediumCVSS 6.5Exploitation Probability (EPSS)
Elevated risk57th percentile - higher than 57% of all known CVEs
Summary
Uptime Kuma, a monitoring tool, has a path traversal vulnerability in versions prior to 1.22.1. This allows authenticated users to delete files from the server, potentially leading to data loss and system unavailability.
Risk Assessment
An attacker with the right permissions can delete critical files, which may cause Uptime Kuma or the entire system to fail. This poses a serious risk to data integrity and service availability.
Recommendation
It is recommended to update Uptime Kuma to version 1.22.1 or later to mitigate this vulnerability. Additionally, consider restricting API access for authenticated users.
Original NVD description (English source)
Uptime Kuma, a self-hosted monitoring tool, has a path traversal vulnerability in versions prior to 1.22.1. Uptime Kuma allows authenticated users to install plugins from an official list of plugins. This feature is currently disabled in the web interface, but the corresponding API endpoints are still available after login. Before a plugin is downloaded, the plugin installation directory is checked for existence. If it exists, it's removed before the plugin installation. Because the plugin is not validated against the official list of plugins or sanitized, the check for existence and the removal of the plugin installation directory are prone to path traversal. This vulnerability allows an authenticated attacker to delete files from the server Uptime Kuma is running on. Depending on which files are deleted, Uptime Kuma or the whole system may become unavailable due to data loss.