What’s Vulnerable › Vulnerabilities

CVE-2026-109287: Open WebUI 0.9.6 before 0.11.4 Information Disclosure via Unscoped Directory ID

• Severity: medium (CVSS 4.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-10-12 · updated 2026-10-23
• Weakness: CWE-639

Description

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.

Affected products

• open-webui: from 0.9.6 before 0.11.4 — fixed in 0.11.4

How to fix

Upgrade to a fixed version: open-webui 0.11.4. Check the vendor advisory for mitigations.

References

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

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