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OpenAdvisories
High · 7.5 CVE-2024-10912 EUVD-2025-7062GHSA-79rp-v9rm-gxm8PYSEC-2026-1395

Denial of Service in lm-sys/fastchat

Published Mar 20, 2025 · Updated Mar 20, 2025 · Assigned by @huntr_ai

Description

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.

Affected products

VendorProductAffectedFixed
lm-sys lm-sys/fastchat unspecified – ≤ latest —

Affected packages

EcosystemPackageAffectedFixedRecord
PyPI fschat <= 0.2.36 — GHSA-79rp-v9rm-gxm8

References