CVE WatchSep 10, 2026

CVE-2026-88000

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/chats/{id}/me

CVSS

6.5

Medium

EPSS

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KEV

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Exploit Today

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0-100

Published: Sep 9, 2026 · Last modified: Sep 10, 2026 · CWE-835

EPSS · 30d

Not enough EPSS history yet.

Technical description

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.10.0 until 0.11.1, DELETE /api/v1/chats/{id}/messages/{message_id} used the chat-history deletion helper in backend/open_webui/models/chats.py to follow childrenIds without recording visited message identifiers. An authenticated user could store a cyclic chat tree and delete a message, causing a synchronous infinite loop on the server request loop that blocked every user's requests until the process was killed. This issue is fixed in version 0.11.1.

Official references

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