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Open WebUI has an IDOR vulnerability in the update_message_by_id API endpoint

🗓️ 13 Jul 2026 15:19:07Reported by Python Packaging AdvisoryType 
pypa
 pypa
🔗 github.com👁 4 Views

Open WebUI flaw in update_message_by_id lets group or direct message members modify others messages in the same channel (v0.8.12).

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13 Jul 2026 16:05Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.14.3
EPSS0.00204
SSVC
4