CVE WatchOct 13, 2026

CVE-2026-109283

Open WebUI from 0.11.1 before 0.11.4 contains an authorization bypass in the OAuth token exchange endpoint, which reads role claims only fro

CVSS

5.4

Medium

EPSS

0.2%

p10

KEV

—

Exploit Today

0-100

Published: Oct 12, 2026 · Last modified: Oct 13, 2026 · CWE-863

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-132026-10-23

Technical description

Open WebUI from 0.11.1 before 0.11.4 contains an authorization bypass in the OAuth token exchange endpoint, which reads role claims only from the provider's userinfo response and keeps the user's existing role when no roles claim is found, ignoring roles sent only in the ID token. Users with a linked account whose identity provider role no longer satisfies the OAuth role policy can send a valid provider access token to POST /api/v1/auths/oauth/{provider}/token/exchange to obtain a session retaining their previous role.

Official references

Related CVEs

CVECVSSEPSSKEVRExploitTitleMod.

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