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CVE-2026-70483

CVE-2026-70483 · Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.6 until 0.11.0, DELETE /api/v1/chats/{id} cancelled a chat's in-flight tasks before checking whether the caller could delete that chat. Any authenticated user who knew another user's chat id could abort that user's running model response, title generation, or tag generation, even though the delete was refused and no chat data was deleted, modified, or disclosed. This issue is fixed in 0.11.0.

CVSS 3.1 · Low · EPSS 0.5% · Fix available

Published
Updated

Stack: python

Affected products and versions

  • open-webui

    Versions
    • >= 0.9.6, < 0.11.0: Affected

    No fix published

  • open-webui PyPI

    Versions
    • 0.10.0
    • 0.10.1
    • 0.10.2
    • 0.9.6
    Affected ranges
    • ECOSYSTEM: ≥ 0.9.6, < 0.11.0

    Update to 0.11.0

Original sources

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