CVE-2026-88006Network attack vector

Continued account access via skipped OAuth policy checks

Published Sep 10, 2026 · Updated Sep 10, 2026

Incorrect authorization in Open WebUI 0.8.0 through 0.11.0 allows remote authenticated users to retain access via OAuth token exchange. The endpoint in backend/open_webui/routers/auths.py reimplements identity lookup but issues a session without the callback's domain and role policy checks. Exploitation requires token exchange to be enabled, a relevant OAuth restriction, a valid provider token, and an existing linked or email-matched account; access continues only at the account's existing role.

CVSS severity6.5
Medium
EPSS probability0.22%
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 0.8.0 through 0.11.0 allows remote authenticated users to retain access via OAuth token exchange. The endpoint in backend/open_webui/routers/auths.py reimplements identity lookup but issues a session without the callback's domain and role policy checks. Exploitation requires token exchange to be enabled, a relevant OAuth restriction, a valid provider token, and an existing linked or email-matched account; access continues only at the account's existing role.

The record

CVE
CVE-2026-88006
Published
Sep 10, 2026
Updated
Sep 10, 2026
Vendor
Open WebUI
Product
Open WebUI
Classifications
CWE-863, T1078
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 10, 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=>= 0.8.0, < 0.11.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open WebUI · Open WebUIversion=>= 0.8.0, < 0.11.1

Published CVSS scores

6.5GitHub Security AdvisoryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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.

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

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 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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