GHSA-jh9g-8jqw-m2qx: Open WebUI Exposes System Prompt to Regular User [Non-Admin]
Summary
In Open WebUI v0.6.40, a regular user can view the system prompt (the hidden instructions that control how an AI model behaves) that an admin set up, by making a simple web request to /api/models. This exposes confidential information because attackers can learn how the model works internally and potentially manipulate its behavior.
Vulnerability Details
EPSS: 0.0%
Yes
May 14, 2026
Classification
Affected Vendors
Affected Packages
Related Issues
CVE-2025-45150: Insecure permissions in LangChain-ChatGLM-Webui commit ef829 allows attackers to arbitrarily view and download sensitive
CVE-2025-54868: LibreChat is a ChatGPT clone with additional features. In versions 0.0.6 through 0.7.7-rc1, an exposed testing endpoint
Original source: https://github.com/advisories/GHSA-jh9g-8jqw-m2qx
First tracked: May 14, 2026 at 08:00 PM
Classified by LLM (prompt v3) · confidence: 95%