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.

INFO

Published Date :

2026-02-17T01:52:03.650Z

Last Modified :

2026-02-17T14:37:46.080Z

Source :

VulnCheck
AFFECTED PRODUCTS

The following products are affected by CVE-2026-26220 vulnerability.

Vendors Products
Modeltc
  • Lightllm
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-26220.

URL Resource
https://chocapikk.com/posts/2026/lightllm-pickle-rce/ cve-icon cve-icon
https://github.com/ModelTC/LightLLM/issues/1213 cve-icon cve-icon
https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/api_http.py#L310 cve-icon cve-icon
https://github.com/ModelTC/lightllm/blob/a27dfc88c2144ed51a6e160b6fbe20aad66c8fe0/lightllm/server/api_http.py#L331 cve-icon cve-icon
https://lightllm-en.readthedocs.io/en/latest/index.html cve-icon cve-icon
https://www.vulncheck.com/advisories/lightllm-pd-mode-unsafe-deserialization-rce cve-icon cve-icon
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