{"id":"PYSEC-2026-1395","summary":"FastChat Denial of Service vulnerability","details":"A Denial of Service (DoS) vulnerability exists in the file upload feature of lm-sys/fastchat version 0.2.36. The vulnerability is due to improper handling of form-data with a large filename in the file upload request. An attacker can exploit this by sending a payload with an excessively large filename, causing the server to become overwhelmed and unavailable to legitimate users.","aliases":["CVE-2024-10912","GHSA-79rp-v9rm-gxm8"],"modified":"2026-07-07T17:46:29.830975759Z","published":"2026-07-07T14:34:52.223565Z","references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-10912"},{"type":"PACKAGE","url":"https://github.com/lm-sys/FastChat"},{"type":"WEB","url":"https://huntr.com/bounties/52f335b8-1134-4d0f-acb4-efef516de414"},{"type":"PACKAGE","url":"https://pypi.org/project/fschat"},{"type":"ADVISORY","url":"https://github.com/advisories/GHSA-79rp-v9rm-gxm8"}],"affected":[{"package":{"name":"fschat","ecosystem":"PyPI","purl":"pkg:pypi/fschat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.2.36"}]}],"versions":["0.1.1","0.1.10","0.1.2","0.1.3","0.1.4","0.1.5","0.1.6","0.1.7","0.1.8","0.1.9","0.2.0","0.2.1","0.2.10","0.2.11","0.2.12","0.2.13","0.2.14","0.2.15","0.2.16","0.2.17","0.2.18","0.2.2","0.2.20","0.2.21","0.2.23","0.2.24","0.2.26","0.2.27","0.2.28","0.2.29","0.2.3","0.2.30","0.2.31","0.2.32","0.2.33","0.2.34","0.2.35","0.2.36","0.2.4","0.2.5","0.2.6","0.2.7","0.2.8","0.2.9"],"database_specific":{"source":"https://github.com/pypa/advisory-database/blob/main/vulns/fschat/PYSEC-2026-1395.yaml"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}