CVE-2026-29070

MEDIUM

5.4

Description

Open WebUI is a self-hosted artificial intelligence platform designed to operate entirely offline. Prior to version 0.8.6, an access control check is missing when deleting a file from a knowledge base. The only check being done is that the user has write access to the knowledge base (or is admin), but NOT that the file actually belongs to this knowledge base. It is thus possible to delete arbitrary files from arbitrary knowledge bases (as long as one knows the file id). Version 0.8.6 patches the issue.

CVE Details

CVSS v3.1 Score5.4

SeverityMEDIUM

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredLOW

User InteractionNONE

Published3/27/2026

Last Modified4/1/2026

Sourcenvd

Honeypot Sightings0

Affected Products

openwebui:open_webui

Weaknesses (CWE)

CWE-862

References

https://github.com/open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf(security-advisories@github.com)

IOC Correlations

No correlations recorded

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