Critical severity9.8NVD Advisory· Published Sep 23, 2026· Updated Sep 23, 2026
CVE-2026-96560
CVE-2026-96560
Description
LightLLM through 1.2.0 contains a remote code execution vulnerability in the KV-transfer worker when started with --pd_trans_mode nccl, which exposes an unauthenticated RPyC control channel that deserializes attacker-supplied data. Attackers can send malicious pickled objects to the exposed RPyC ThreadedServer to execute arbitrary code with the privileges of the LightLLM service account.
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Affected products
1Patches
Vulnerability mechanics
References
6- github.com/ModelTC/LightLLM/issues/1590nvd
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/kv_transporter.pynvd
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.pynvd
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.pynvd
- github.com/ModelTC/lightllm/blob/v1.2.0/lightllm/server/router/model_infer/mode_backend/pd/nccl_kv_transporter.pynvd
- www.vulncheck.com/advisories/lightllm-through-1.2.0-unauthenticated-remote-code-execution-via-nccl-pd-rpyc-control-channelnvd
News mentions
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