CVE-2026-88002
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-webui | open-webui | >= 0.5.0, < 0.11.1 | affected |
Weaknesses
- CWE-835: CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-jqhh-cjmq-vmv6
- https://github.com/open-webui/open-webui/pull/28034
- https://github.com/open-webui/open-webui/commit/5c79ccc9e5c9efc2bc024d8f0b9757652ece929a
- https://github.com/open-webui/open-webui/releases/tag/v0.11.1
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