CVE-2026-59215 | Open WebUI is an extensible, feature-rich, and user-friendly… | CVSS 3.1 LOW

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.

Metadata

CVE ID: CVE-2026-59215
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-07-02 21:05 UTC
Published: 2026-07-09 16:57 UTC
Last updated: 2026-07-09 18:40 UTC
Primary CWE: CWE-639
CWE-639: Authorization Bypass Through User-Controlled Key
Vendor / Product: open-webui / open-webui
Sources: cve.org · NVD

Severity & Metrics

3.1 LOW CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
open-webui	open-webui	—	< 0.10.0

Weakness (CWE)

CWE	Source	Description
CWE-639	cna	CWE-639: Authorization Bypass Through User-Controlled Key

CVSS scores (1)

Score	Severity	Version	Source	Vector
3.1	LOW	3.1	cna	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

References (4)

https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j https://github.com/open-webui/open-webui/security/advisories/GHSA-73x5-h92w-xc2j
https://github.com/open-webui/open-webui/pull/25766 https://github.com/open-webui/open-webui/pull/25766
https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1 https://github.com/open-webui/open-webui/commit/a66477b7104c5d141ce7bffaea424b43e7666ef1
https://github.com/open-webui/open-webui/releases/tag/v0.10.0 https://github.com/open-webui/open-webui/releases/tag/v0.10.0