---
title: "CVE-2024-9052: vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recv_object"
url: https://erroneo.us/security/cve/CVE-2024-9052/
description: "CVE-2024-9052 (vllm (PyPI)): vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recvobject"
type: vulnerability-record
section: "Security Digest"
date_published: 2025-03-20
date_modified: 2025-04-10
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2024-9052"
kev: false
cvss: 9.8
epss: null
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2024-9052: vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recv_object

**Signal:** Critical and remotely reachable. No known exploitation yet, but it is network-reachable without credentials. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- No confirmed exploitation. It is not in CISA’s KEV catalog. That can change quickly after a public write-up; re-check if you are affected.
- Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.
- Only applies if your dependency tree includes vllm (PyPI) <= 0.8.1, no fixed version listed . Check your lockfile, including transitive dependencies.

## What it is

vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recvobject

## Affected packages

- PyPI `vllm` <= 0.8.1 → fixed: none listed

## Severity

- GitHub CVSS 3.1: 9.8 `CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).

## Sources

- [GitHub Advisory GHSA-pgr7-mhp5-fgjp](https://github.com/advisories/GHSA-pgr7-mhp5-fgjp)
- [CVE.org record CVE-2024-9052](https://www.cve.org/CVERecord?id=CVE-2024-9052)
- [NVD entry CVE-2024-9052](https://nvd.nist.gov/vuln/detail/CVE-2024-9052)
- [huntr.com](https://huntr.com/bounties/ea75728f-4efe-4a3d-9f53-33f2c908e9f8)
- [github.com](https://github.com/vllm-project/vllm/blob/32e7db25365415841ebc7c4215851743fbb1bad1/vllm/distributed/parallel_state.py#L480)
- [github.com](https://github.com/vllm-project/vllm/blob/v0.8.1/vllm/distributed/parallel_state.py#L457)
- [github.com](https://github.com/github/advisory-database/pull/5444)

---
Source page: https://erroneo.us/security/cve/CVE-2024-9052/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt