CVE-2026-44566
HighSummary
Open WebUI is an artificial intelligence platform that prior to version 0.1.124 did not validate or sanitize file names uploaded by users. This allows users to upload files with names containing dot-segments, enabling traversal out of the intended upload directory.
Risk Assessment
Users can upload files anywhere on the filesystem where the web server user has permissions, posing a serious security risk. This could lead to unauthorized access to sensitive data.
Recommendation
It is recommended to update Open WebUI to version 0.1.124 or later to mitigate this vulnerability. Additionally, implementing validation and sanitization mechanisms for file names is advisable.
Original NVD description (English source)
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.1.124, when attaching files to a promp, the name of the file is derived from the original HTTP upload request and is not validated or sanitized. This allows for users to upload files with names containing dot-segments in the file path and traverse out of the intended uploads directory. Effectively, users can upload files anywhere on the filesystem the user running the web server has permission. This vulnerability is fixed in 0.1.124.