---
id: CVE-2024-9052
aliases:
  - GHSA-pgr7-mhp5-fgjp
  - PYSEC-2026-568
title: >-
  vLLM deserialization vulnerability in
  vllm.distributed.GroupCoordinator.recv_object
summary: >-
  vLLM deserialization vulnerability in
  vllm.distributed.GroupCoordinator.recv_object
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
vendor: vllm
product: vllm
ecosystem: pip
affected:
  - vllm <= 0.8.1
published: '2025-03-20'
updated: '2026-08-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-pgr7-mhp5-fgjp'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-9052'
  - url: 'https://github.com/github/advisory-database/pull/5444'
  - url: 'https://github.com/vllm-project/vllm'
  - url: >-
      https://github.com/vllm-project/vllm/blob/32e7db25365415841ebc7c4215851743fbb1bad1/vllm/distributed/parallel_state.py#L480
  - url: >-
      https://github.com/vllm-project/vllm/blob/v0.8.1/vllm/distributed/parallel_state.py#L457
  - url: 'https://huntr.com/bounties/ea75728f-4efe-4a3d-9f53-33f2c908e9f8'
tags:
  - osv
  - pip
ingestedAt: '2026-08-07T19:14:14.603Z'
---

## Overview

vllm-project vllm version 0.6.0 contains a vulnerability in the distributed training API. The function vllm.distributed.GroupCoordinator.recv_object() deserializes received object bytes using pickle.loads() without sanitization, leading to a remote code execution vulnerability.

### Maintainer perspective
Note that vLLM does NOT use the code as described in the report on huntr. The problem only exists if you use these internal APIs in a way that exposes them to a network as described. The vllm team was not involved in the analysis of this report and the decision to assign it a CVE.

## Affected packages

- `vllm <= 0.8.1`

## Remediation

Refer to the advisory for the patched release.