CVE WatchSep 10, 2026

CVE-2026-88002

Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.5.0 until 0.11.1, the message-chain reconstruct

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 0.5.0 until 0.11.1, the message-chain reconstruction helper in backend/open_webui/utils/misc.py advanced through a chat history by map key but tracked visited entries using each message body's optional id field. An authenticated user could store id-less messages in a parent cycle and trigger a non-terminating walk that blocked the async event loop, grew memory until termination, and remained persistent across process restarts. This issue is fixed in version 0.11.1.

Official references

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