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In version 0.3.8 of open-webui, an endpoint for converting markdown to HTML is exposed without authentication. A maliciously crafted markdown payload can cause the server to spend excessive time converting it, leading to a denial of service. The server becomes unresponsive to other requests until the conversion is complete.
Reserved 2024-08-19 | Published 2025-03-20 | Updated 2025-03-20 | Assigner @huntr_aiCWE-400 Uncontrolled Resource Consumption
huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc
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