CVE-2026-45349

High

Published: 15/05/2026(UTC)Translated: 15/06/2026(UTC)NVD NIST

Summary

Open WebUI is a self-hosted artificial intelligence platform that prior to version 0.9.0 allowed users to continue another user's conversation using their Chat ID and their own API key.

Risk Assessment

This vulnerability may lead to unauthorized access to private user conversations, posing a risk to privacy and data security.

Recommendation

It is recommended to upgrade to version 0.9.0 or later to eliminate this vulnerability and secure user conversation access.

Original NVD description (English source)

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to 0.9.0, a user just needs to use the API endpoint: /api/chat/completions with their own API key (generated in OWUI) and the Chat ID of another user to continue the conversation of the other user. This vulnerability is fixed in 0.9.0.