---
title: "CVE-2026-115912: vLLM - Insecure Deserialization"
description: "vLLM < 0.32.0 contains an insecure deserialization vulnerability caused by trusting forged shared-memory address and monotonic_id values in public multimodal features.kwargs_data, letting authenticated attackers execute arbitrary Python code remotely, exploit requires authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-115912/
---

# CVE-2026-115912 vLLM - Insecure Deserialization

vLLM < 0.32.0 contains an insecure deserialization vulnerability caused by trusting forged shared-memory address and monotonic\_id values in public multimodal features.kwargs\_data, letting authenticated attackers execute arbitrary Python code remotely, exploit requires authentication.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-115912)

## Details

Type

Insecure Deserialization

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

26 October 2026

Updated

27 October 2026

Weakness

[CWE-502](https://cwe.mitre.org/data/definitions/502.html)

## Vendor fix

Upgrade to version 0.32.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-115912](https://nvd.nist.gov/vuln/detail/CVE-2026-115912)
- [https://github.com/vllm-project/vllm/pull/59357](https://github.com/vllm-project/vllm/pull/59357)
- [https://github.com/vllm-project/vllm/releases/tag/v0.32.0](https://github.com/vllm-project/vllm/releases/tag/v0.32.0)
- [https://github.com/vllm-project/vllm/security/advisories/GHSA-6757-hggm-hp2w](https://github.com/vllm-project/vllm/security/advisories/GHSA-6757-hggm-hp2w)
- [https://github.com/vllm-project/vllm/commit/3d5625cc3c2474994107047d7a6ecb8e4008f9b0](https://github.com/vllm-project/vllm/commit/3d5625cc3c2474994107047d7a6ecb8e4008f9b0)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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