Denial of Service Vulnerability in LightLLM Affected by Unauthenticated Attacks
CVE-2026-111160

8.7HIGH

Key Information:

Vendor

Modeltc

Status
Lightllm
Vendor
CVE Published:
15 October 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-111160?

LightLLM version 1.2.0 presents a denial of service vulnerability that enables unauthenticated attackers to disrupt the inference worker. By sending a carefully crafted request to the /generate endpoint that includes the internal pd_kv_trans_params field, an attacker can trigger a failure in the pickle.loads function within InferSamplingParams. This failure results in the termination of the inference thread, leaving the /health endpoint operational while all subsequent requests become unresponsive until the system is restarted.

Affected Version(s)

LightLLM 0 <= 1.2.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-111160 - Proof of Concept

References

https://github.com/ModelTC/LightLLM/issues/1629
issue-trackingexploit
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/...
technical-description
https://github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Mingkai Yu
Jiapeng Li
Qiang Fu
Jiajia Liu
.