CVE-2026-59714

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.

CVSS v3 7.1 HIGH

7.1^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/open-webui/open-webui/commit/ac3449cac91e62b08a7c28e54fcd044d14dea791
https://github.com/open-webui/open-webui/pull/26385
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
https://github.com/open-webui/open-webui/security/advisories/GHSA-x2ff-v5v8-m75m

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-13 20:17

Updated : 2026-08-14 19:17

NVD link : CVE-2026-59714

Mitre link : CVE-2026-59714

CVE.ORG link : CVE-2026-59714

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

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