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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History

Tue, 17 Feb 2026 15:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 17 Feb 2026 09:00:00 +0000

Type Values Removed Values Added
First Time appeared Modeltc
Modeltc lightllm
Vendors & Products Modeltc
Modeltc lightllm

Tue, 17 Feb 2026 02:30:00 +0000

Type Values Removed Values Added
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.
Title LightLLM <= 1.1.0 PD Mode Unsafe Deserialization RCE
Weaknesses CWE-502
References
Metrics cvssV4_0

{'score': 9.3, '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'}


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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-17T14:37:46.080Z

Reserved: 2026-02-11T20:08:07.944Z

Link: CVE-2026-26220

cve-icon Vulnrichment

Updated: 2026-02-17T14:37:39.175Z

cve-icon NVD

Status : Received

Published: 2026-02-17T03:16:01.893

Modified: 2026-02-17T03:16:01.893

Link: CVE-2026-26220

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-17T08:48:55Z

Weaknesses