CVE-2026-59217Public exploitNetwork attack vector

Authenticated knowledge-base modification via unchecked upload metadata

Published Jul 9, 2026 · Updated Jul 9, 2026

Incorrect authorization in Open WebUI before 0.10.0 allows remote authenticated users to add arbitrary files to read-only knowledge bases. The process_uploaded_file path trusts metadata.knowledge_id and commits a KnowledgeFile row before checking write access; a later failed vector-write check leaves that row intact. Exploitation requires a verified account and a valid knowledge-base ID, and it alters shared file membership while exposing the added file to authorized readers.

CVSS severity4.3
Medium
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Open WebUI before 0.10.0 allows remote authenticated users to add arbitrary files to read-only knowledge bases. The process_uploaded_file path trusts metadata.knowledge_id and commits a KnowledgeFile row before checking write access; a later failed vector-write check leaves that row intact. Exploitation requires a verified account and a valid knowledge-base ID, and it alters shared file membership while exposing the added file to authorized readers.

The record

CVE
CVE-2026-59217
Published
Jul 9, 2026
Updated
Jul 9, 2026
Vendor
Open WebUI
Product
Open WebUI
Classifications
CWE-862, CWE-863
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.10.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open WebUI · Open WebUIversion=< 0.10.0

Published CVSS scores

4.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-863Incorrect Authorization

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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