CVE-2026-70490Network attack vectorHinoki check available

Unapproved terminal access via missing WebSocket role check

Published Aug 4, 2026 · Updated Aug 4, 2026

Incorrect authorization in Open WebUI 0.8.8 through 0.10.2 allows remote authenticated users to open interactive terminal sessions. The terminal WebSocket helper decodes a first-message JWT and looks up the user but omits the verified-user role check enforced by HTTP terminal routes. Exploitation requires a valid unexpired token for a pending account, a configured terminal server, and an applicable access grant; it yields shell, file-browsing, and terminal-tool access without bypassing terminal grants.

CVSS severity6.3
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Incorrect authorization in Open WebUI 0.8.8 through 0.10.2 allows remote authenticated users to open interactive terminal sessions. The terminal WebSocket helper decodes a first-message JWT and looks up the user but omits the verified-user role check enforced by HTTP terminal routes. Exploitation requires a valid unexpired token for a pending account, a configured terminal server, and an applicable access grant; it yields shell, file-browsing, and terminal-tool access without bypassing terminal grants.

The record

CVE
CVE-2026-70490
Published
Aug 4, 2026
Updated
Aug 4, 2026
Vendor
Open WebUI
Product
Open WebUI
Classifications
CWE-863, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=>= 0.8.8, < 0.11.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open WebUI · Open WebUIversion=>= 0.8.8, < 0.11.0

Published CVSS scores

6.3GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1078Valid Accounts

Public exploit references

No public exploit references are available in this record.

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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