CVE-2026-54012
HighCVSS 7.1Exploitation Probability (EPSS)
Low risk9th percentile — higher than 9% of all known CVEs
Summary
Open WebUI prior to version 0.9.6 allows users to store arbitrary meta.knowledge entries in models without checking file permissions. This enables malicious model owners to access private files of other users.
Risk Assessment
The organization may be exposed to unauthorized access to sensitive data, potentially leading to information leaks and violations of user privacy.
Recommendation
It is recommended to upgrade Open WebUI to version 0.9.6 or later to mitigate this vulnerability and implement additional file permission verification mechanisms.
Original NVD description (English source)
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.6, Open WebUI lets a user who can create, update, or import workspace models store arbitrary meta.knowledge entries on their model without checking whether they own or can read the referenced files. Open WebUI then treats meta.knowledge entries of type file as an authorization source in two places: the built-in view_file tool reads the file's extracted text, and has_access_to_file()'s model branch authorizes the file content and file delete endpoints. A malicious model owner can therefore attach another user's file ID to their model metadata and read or delete that private file. This vulnerability is fixed in 0.9.6.