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CVE-2026-90919

LightLLM through 1.2.0 Unauthenticated Remote Code Execution via Config Server Pickle Deserialization

CVSS 4.0 9.3 CRITICALCVSS 3.1 9.8 CRITICALCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-90919

Published

LightLLM through 1.2.0 contains a remote code execution vulnerability in the Config Server's unauthenticated /visual_register WebSocket endpoint that passes the first client frame directly to pickle.loads(). Attackers can reach the Config Server port and send a malicious serialized payload with a __reduce__ method to execute arbitrary code with Config Server process privileges.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-90919

Published

LightLLM

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "ModelTC",
                    "product": "LightLLM",
                    "packageName": "LightLLM",
                    "repo": "https://github.com/ModelTC/lightllm",
                    "packageURL": "pkg:github/ModelTC/lightllm",
                    "defaultStatus": "unaffected",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "1.2.0"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON