Advisories

LightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCE

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severity
critical
date
Affecting
  • LightLLM <= 1.1.0

CWE
  • CWE-502 Deserialization of Untrusted Data
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Credit
Valentin Lobstein (Chocapikk)
Description
LightLLM version 1.1.0 and prior contain an unauthenticated remote code execution vulnerability in PD (prefill-decode) disaggregation mode. The PD master node exposes WebSocket endpoints that receive binary frames and pass the data directly to pickle.loads() without authentication or validation. A remote attacker who can reach the PD master can send a crafted payload to achieve arbitrary code execution.

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