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CVE-2026-70483

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

Description (CNA)

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 (CNA)

Vendor / productVersions
open-webui / open-webuiaffected >= 0.9.6, < 0.11.0

CWE

CWE-862

References

ADP enrichment

CISA-ADP

No English description supplied.