CVE-2026-96560: Deserialization of Untrusted Data in ModelTC LightLLM
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.
CVE-2026-96560: Deserialization of Untrusted Data in ModelTC LightLLM
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.
CVSS v4.0
Score 9.3critical
Affected software
ModelTC
LightLLM
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Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-23T13:13:12.619Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ab3e6bff7a7c54106ef6980
Added to database: 09/23/2026, 14:48:31 UTC
Last updated: 09/23/2026, 14:48:31 UTC
Views: 1
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