Medium severity · published Jul 9, 2026
CVE-2026-59217
Open WebUI: Upload `metadata.knowledge_id` bypasses the knowledge-base write-access check (read-only users can add files to KB)
4.3
CVSS
0.4%
EPSS
No
On KEV
Description
Open WebUI is an extensible, feature-rich, and user-friendly self-hosted AI platform. Prior to 0.10.0, the file upload path accepted metadata.knowledge_id and auto-linked uploaded files to a target knowledge base without applying the write-access check used by /api/v1/knowledge//file/add, allowing read-only knowledge-base users to add arbitrary files. This issue is fixed in version 0.10.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 31% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
open-webui · open-webui
< 0.10.0 · source: vendor
OW
Open Webui · Openwebui
before 0.10.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-59217
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-59217
Patch
https://github.com/open-webui/open-webui/commit/b7626f05fb92b24ab923ad81a037071ebd5623d1
Issue Tracking
https://github.com/open-webui/open-webui/pull/26001
Product
https://github.com/open-webui/open-webui/releases/tag/v0.10.0
Exploit
https://github.com/open-webui/open-webui/security/advisories/GHSA-7r7x-gjvr-448g
More from open-webui
9.8
CVE-2026-44566
Open WebUI: Arbitrary File Upload and Path Traversal
9.6
CVE-2026-56400
open-webui - Remote Code Execution via CORS Misconfiguration and Session Validation
9.1
CVE-2026-44551
Open WebUI: LDAP Empty Password Authentication Bypass
9.0
CVE-2026-56398
Open WebUI - Stored Cross-Site Scripting via OAuth Picture Claim SVG Data URI
9.0
CVE-2026-59216
Open WebUI: Cross-user code-interpreter and tool execution via unvalidated Socket.IO event-caller session_id