CVE-2026-90919criticalCWE-502

CVE-2026-90919: critical vulnerability in ModelTC LightLLM

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

Published

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.3epss 1.1%
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.
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
Affected products
ModelTC · LightLLM
Related CVEs — ModelTC LightLLM

In the same product, most dangerous first.

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