CVE-2026-109287

MEDIUM 4.3

Open WebUI 0.9.6 before 0.11.4 Information Disclosure via Unscoped Directory ID

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

Open WebUI from 0.9.6 before 0.11.4 contains an authorization flaw where the knowledge base file listing does not verify that a supplied directory_id belongs to the requested knowledge base. Users with read access to any knowledge base can supply a retained foreign directory UUID to GET /api/v1/knowledge/{id}/files. The returned breadcrumbs expose folder names, owner user ids and knowledge base ids of that directory and all its ancestors.

CWE	CWE-639
Vendor	open-webui
Product	open-webui
Published	Oct 12, 2026

Stay Ahead of the Next One

Get instant alerts for open-webui open-webui

Be the first to know when new medium 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:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Affected Versions

open-webui / open-webui

0.9.6 < 0.11.4

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/open-webui/open-webui/security/advisories/GHSA-jx3w-3pqq-7f3w vulncheck.com: https://www.vulncheck.com/advisories/open-webui-0.9.6-before-0.11.4-information-disclosure-via-unscoped-directory-id

Credits

🔍 0xMax-Sec Classic298