CVE-2024-9052: Vllm VLLM Deserialization Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-pgr7-mhp5-fgjp
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CVSS 9.8
CWE-502
Published
Advisory Summary

CVE-2024-9052 is a CRITICAL (CVSS 9.8) vllm deserialization vulnerability vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Vllm libraries in the PyPI ecosystem. The issue involves vllm deserialization vulnerability in vllm.distributed.groupcoordinator.recv_object. Remediation is available in the latest vendor maintenance releases.

CVE-2024-9052 at a Glance

CVE Identifier CVE-2024-9052
GHSA Identifier GHSA-pgr7-mhp5-fgjp
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Vllm
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2024-9052

To remediate this vulnerability, upgrade all affected Vllm dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vllm fixed: Latest secure release 
pip install vllm>=Latest secure release
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show vllm

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2024-9052, inspect your installed packages using pip:

pip show vllm

Analyze the terminal output to locate any version of Vllm in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The pip show vllm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Vllm, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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.

CVE-2024-9052 Affected Vllm Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
vllm
pypi/vllm
PyPI
≤ 0.8.1

References

NVD — CVE-2024-9052 NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-9052
Vllm Source Repository REPOSITORY
https://github.com/github/advisory-database/pull/5444
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm/blob/32e7db25365415841ebc7c4215851743fbb1bad1/vllm/distributed/parallel_state.py#L480
Vllm Source Repository REPOSITORY
https://github.com/vllm-project/vllm/blob/v0.8.1/vllm/distributed/parallel_state.py#L457
huntr.com/bounties/ea75728f-4... WEB
https://huntr.com/bounties/ea75728f-4efe-4a3d-9f53-33f2c908e9f8

Frequently Asked Questions

What is CVE-2024-9052?
CVE-2024-9052 is a security vulnerability in Vllm involving vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recv_object under CWE-502: Deserialization of Untrusted Data.
Which Vllm versions are affected?
Affected versions include releases prior to current release patches across affected packages: vllm.
What version fixes CVE-2024-9052?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is vllm affected?
Yes, vllm is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2024-9052?
CVE-2024-9052 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2024-9052?
CVE-2024-9052 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check PyPI dependencies for CVE-2024-9052?
Run the dependency tree command: 'pip show vllm'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-pgr7-mhp5-fgjp",
  "modified" : "2025-04-09T17:02:38Z",
  "published" : "2025-03-20T12:32:50Z",
  "aliases" : [ "CVE-2024-9052" ],
  "summary" : "vLLM deserialization vulnerability in vllm.distributed.GroupCoordinator.recv_object",
  "details" : "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.\n\n### Maintainer perspective\nNote 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vllm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "0.8.1"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-9052"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/github/advisory-database/pull/5444"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vllm-project/vllm"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/blob/32e7db25365415841ebc7c4215851743fbb1bad1/vllm/distributed/parallel_state.py#L480"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/blob/v0.8.1/vllm/distributed/parallel_state.py#L457"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.com/bounties/ea75728f-4efe-4a3d-9f53-33f2c908e9f8"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-03-21T03:30:38Z",
    "nvd_published_at" : "2025-03-20T10:15:46Z"
  }
}