CVE-2026-59215 Details
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, channel thread parent and reply handling did not bind parent_id to the channel in the URL, allowing an authenticated user to reference a message from another private or DM channel and disclose thread context across channels. This issue is fixed in version 0.10.0.
A vulnerability in Open WebUI prior to version 0.10.0 allows authenticated users to access private messages from other channels through cross-channel thread parent binding. The issue arises because the application does not verify that a thread parent message belongs to the same channel as the one being accessed. This flaw can be exploited to disclose the content, channel ID, and author of a private message by referencing its ID from a channel the user has access to.
Users can update to Open WebUI version 0.10.0 or later, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jul 9, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j | CISA-ADP | MitigationVendor Advisory |
| https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1 | [email protected] | Patch |
| https://github.com/open-webui/open-webui/pull/25766 | [email protected] | Issue TrackingPatch |
| https://github.com/open-webui/open-webui/releases/tag/v0.10.0 | [email protected] | ProductRelease Notes |
| https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j | [email protected] | MitigationVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| openwebui open webui | < 0.10.0 |
CPE
Remediation
| |
Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 13, 2026 | Initial Analysis | [email protected] |
| Jul 9, 2026 | CVE Modified | CISA-ADP |
| Jul 9, 2026 | New CVE Received | [email protected] |