Open WebUI has unauthorized deletion of knowledge files_CVE-2026-29070

5.4 / 10

MEDIUM

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

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.

Basic Information

ID CVE-2026-29070

Source GitHub_M

Published Mar 26, 2026 at 23:39

Modified Mar 30, 2026 at 11:49

Affected Product

Vendor open-webui

Product open-webui

Version < 0.8.6

Affected Versions open-webui open-webui < 0.8.6

CWE Classification

CWE-862

References

github.com /open-webui/open-webui/security/advisories/GHSA-26gm-93rw-cchf

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    "published": "2026-03-26T23:39:33.197Z",
    "modified": "2026-03-30T11:49:56.855Z",
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