CVE-2026-34222Public exploitNetwork attack vector

Member-level API key disclosure via unchecked Tool Valves

Published Apr 1, 2026 · Updated Apr 1, 2026

Improper authorization in Open WebUI before 0.8.11 allows remote authenticated users to read administrator-configured Tool Valve data. The GET /api/v1/tools/id/<tool_id>/valves route retrieves stored valve values after authentication but does not verify tool ownership, write access, or the administrator role. Member access and a guessable Tool ID are sufficient; exposed values can include third-party API keys usable with the configured technical user's privileges.

CVSS severity7.7
High
EPSS probability5.01%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authorization in Open WebUI before 0.8.11 allows remote authenticated users to read administrator-configured Tool Valve data. The GET /api/v1/tools/id/<tool_id>/valves route retrieves stored valve values after authentication but does not verify tool ownership, write access, or the administrator role. Member access and a guessable Tool ID are sufficient; exposed values can include third-party API keys usable with the configured technical user's privileges.

The record

CVE
CVE-2026-34222
Published
Apr 1, 2026
Updated
Apr 1, 2026
Vendor
Open WebUI
Product
Open WebUI
Classifications
CWE-285, T1552
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 1, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 1, 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=< 0.8.11

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open WebUI · Open WebUIversion=< 0.8.11

Published CVSS scores

7.7GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-285Improper Authorization
T1552Unsecured Credentials

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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