High severity7.1NVD Advisory· Published Aug 13, 2026· Updated Sep 18, 2026
CVE-2026-59714
CVE-2026-59714
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
open-webuiPyPI | >= 0.9.5, < 0.10.0 | 0.10.0 |
Affected products
1- Range: 0.9.5 <= 0.10.0
Patches
Vulnerability mechanics
References
6- github.com/advisories/GHSA-x2ff-v5v8-m75mghsaADVISORY
- github.com/open-webui/open-webui/commit/33e4e0dcc43afcca80f9c635d762cdc76c768ba9ghsaWEB
- github.com/open-webui/open-webui/commit/ac3449cac91e62b08a7c28e54fcd044d14dea791nvdWEB
- github.com/open-webui/open-webui/releases/tag/v0.10.0nvdWEB
- github.com/open-webui/open-webui/security/advisories/GHSA-x2ff-v5v8-m75mnvdWEB
- github.com/open-webui/open-webui/pull/26385nvd
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