CVE-2026-109285

Open WebUI from 0.6.0 before 0.11.4 contains an improper access control vulnerability in has_access_to_file that lets former knowledge base collaborators keep file access via stale cached knowledge base references. Attackers with read or write grants can download removed files through the file content endpoint or delete them, including from the owner's private knowledge bases.

CVSS v3 5.0 MEDIUM

5.0^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.6 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/open-webui/open-webui/security/advisories/GHSA-9cxp-636w-4997
https://www.vulncheck.com/advisories/open-webui-0.6.0-before-0.11.4-improper-access-control-via-stale-file-metadata
https://github.com/open-webui/open-webui/security/advisories/GHSA-9cxp-636w-4997

Configurations

No configuration.

History

13 Oct 2026, 19:18

Type	Values Removed	Values Added
References	~~() https://github.com/open-webui/open-webui/security/advisories/GHSA-9cxp-636w-4997 -~~	() https://github.com/open-webui/open-webui/security/advisories/GHSA-9cxp-636w-4997 -

12 Oct 2026, 17:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-12 17:17

Updated : 2026-10-15 15:55

NVD link : CVE-2026-109285

Mitre link : CVE-2026-109285

CVE.ORG link : CVE-2026-109285

JSON object : View

Products Affected

No product.

CWE

CWE-863

Incorrect Authorization

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