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CVE PROGRAM SOURCE RECORD3.1 Low

CVE-2026-70483

Open WebUI: Any authenticated user can cancel another user's chat generation via the chat delete endpoint

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

open-webui open-webui

  • >= 0.9.6, < 0.11.0affected

References