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Open WebUI: Account takeover via OAuth token exchange accepting tokens issued to any client

🗓️ 10 Aug 2026 10:43:49Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 7 Views

Token exchange flaw lets swapping any provider access token for an Open WebUI session and takeover.

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10 Aug 2026 11:01Current
5.5Medium risk
Vulners AI Score5.5
CVSS 3.18.1
EPSS0.00338
SSVC
7