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CVE-2026-59215Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding
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.
3.1 LOWEPSS 0.32%Not in KEVNVD: Analyzed
Overview
Severity
| Score | Severity | Version | Vector String |
|---|---|---|---|
| 3.1 | LOW | 3.1GitHub_M (CNA) | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N |
Details
- CVE ID
- CVE-2026-59215
- Status
- Analyzed
- Assigner (CNA)
- GitHub_M
- Published
- Jul 9, 2026
- Last modified
- 2026-07-13 12:27 UTC
- Weaknesses
- CWE-639 · Authorization Bypass Through User-Controlled Key
Affected Products
As published by the CNA in the CVE record.
open-webuiopen-webui1 version range
- < 0.10.0
References
- github.com https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1
- github.com https://github.com/open-webui/open-webui/pull/25766
- github.com https://github.com/open-webui/open-webui/releases/tag/v0.10.0
- github.com https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j