{"id":"GHSA-5v9m-57mq-qc75","summary":"Open WebUI denial of service through endpoint for converting markdown","details":"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.","aliases":["CVE-2024-7983","PYSEC-2026-1723"],"modified":"2026-07-07T17:56:36.291311332Z","published":"2025-03-20T12:32:47Z","database_specific":{"github_reviewed_at":"2025-03-21T21:23:47Z","nvd_published_at":"2025-03-20T10:15:38Z","cwe_ids":["CWE-400","CWE-770"],"severity":"HIGH","github_reviewed":true},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-7983"},{"type":"PACKAGE","url":"https://github.com/open-webui/open-webui"},{"type":"WEB","url":"https://github.com/open-webui/open-webui/blob/eff736acd2e0bbbdd0eeca4cc209b216a1f23b6a/backend/apps/webui/routers/utils.py#L49"},{"type":"WEB","url":"https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc"}],"affected":[{"package":{"name":"open-webui","ecosystem":"PyPI","purl":"pkg:pypi/open-webui"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.3.8"}]}],"versions":["0.1.124","0.1.125","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","0.2.5","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.3.5","0.3.6","0.3.7","0.3.8"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-5v9m-57mq-qc75/GHSA-5v9m-57mq-qc75.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}