CVE-2024-9053: vLLM allows Remote Code Execution by Pickle Deserialization via AsyncEngineRPCServer() RPC server entrypoints

March 20, 2025 (updated June 8, 2026)

vllm-project vllm version 0.6.0 contains a vulnerability in the AsyncEngineRPCServer() RPC server entrypoints. The core functionality run_server_loop() calls the function _make_handler_coro(), which directly uses cloudpickle.loads() on received messages without any sanitization. This can result in remote code execution by deserializing malicious pickle data.

References

github.com/advisories/GHSA-cj47-qj6g-x7r4
github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-222.yaml
huntr.com/bounties/75a544f3-34a3-4da0-b5a3-1495cb031e09
nvd.nist.gov/vuln/detail/CVE-2024-9053

Code Behaviors & Features

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