{"cve":"CVE-2024-7983","nvd":{"published":"2025-03-20T10:15:38.387","modified":"2026-06-17T08:21:36.823","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-770"],"references":["https://huntr.com/bounties/f8156ca5-1328-480f-a72b-8d3dfdad87dc"],"products":["openwebui:open_webui"],"source":"nvd","synced_at":"2026-10-19T22:00:17.429720821+00:00"},"epss":{"cve":"CVE-2024-7983","score":0.00878,"percentile":0.59053,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5v9m-57mq-qc75","url":"https://osv.dev/vulnerability/GHSA-5v9m-57mq-qc75","summary":"Open WebUI denial of service through endpoint for converting markdown","modified":"2026-07-07T17:56:59.163843534Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<=0.3.8"],"fixed":[]}]},{"id":"PYSEC-2026-1723","url":"https://osv.dev/vulnerability/PYSEC-2026-1723","summary":"Open WebUI denial of service through endpoint for converting markdown","modified":"2026-07-23T11:45:10.989508515Z","packages":[{"ecosystem":"PyPI","name":"open-webui","purl":"pkg:pypi/open-webui","ranges":["<0.5.13"],"fixed":["0.5.13"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}