CVE-2026-45351 — Open WebUI: Exposure of System Prompt to Regular User [Non-Admin]
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.9, when a regular user [non-admin] logs into the application, a h…
Published: 2026-05-15 · CVSS: 6.5 · CVSS 3.1
Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.8.9, when a regular user [non-admin] logs into the application, a http://IP:8080/api/models? web request is initiated by the application and in response, it reveals the system prompt of available models set by admin on models pages in workspace affecting the confidentiality of application. This vulnerability is fixed in 0.8.9.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7