CVE-2026-59215

LOW 3.1

Open WebUI: Private channel messages can be disclosed through cross-channel thread parent_id binding

CVSS Score

3.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639
Vendor	open-webui
Product	open-webui
Published	Jul 9, 2026
Last Updated	Jul 9, 2026

Stay Ahead of the Next One

Get instant alerts for open-webui open-webui

Be the first to know when new low vulnerabilities affecting open-webui open-webui are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

open-webui / open-webui

< 0.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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