CVE-2026-59714
7.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Summary
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. From 0.9.5 before 0.10.0, any authenticated user can overwrite the content of a message in a channel they do not belong to (including private and DM channels) by sending a chat completion request with a channel:-prefixed chat_id and a target message_id. The channel: path routes pipeline output through _make_channel_emitter, which writes to the Messages table using the caller-supplied message_id without binding it to the channel. This issue is fixed in version 0.10.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| open-webui | open-webui | >= 0.9.5, < 0.10.0 | affected |
Weaknesses
- CWE-862: CWE-862: Missing Authorization
References
- https://github.com/open-webui/open-webui/security/advisories/GHSA-x2ff-v5v8-m75m
- https://github.com/open-webui/open-webui/pull/26385
- https://github.com/open-webui/open-webui/commit/ac3449cac91e62b08a7c28e54fcd044d14dea791
- https://github.com/open-webui/open-webui/releases/tag/v0.10.0
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