---
id: CVE-2026-109361
title: >-
  MONAI 1.2.0 before 1.6.1 contains an insecure deserialization vulnerability in
  nnUNetV2Runner that unpickles the postprocessing_file path read from
  inference_information.json without confining it to the results directory
summary: >-
  MONAI 1.2.0 before 1.6.1 contains an insecure deserialization vulnerability in
  nnUNetV2Runner that unpickles the postprocessing_file path read from
  inference_information.json without confining it to the results directory.
  Attackers who c…
severity: high
cvss: 7.3
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-502
published: '2026-10-12'
updated: '2026-10-12'
sourceUpdated: '2026-10-12T17:17:33.630'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-109361'
references:
  - url: >-
      https://github.com/Project-MONAI/MONAI/commit/08576205c4de3c214976294d1dec8f7b2e78cdb9
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-8f32-8649-rv87
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/monai-1.2.0-before-1.6.1-insecure-deserialization-rce-via-nnunetv2runner-postprocessing-file-path
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-12T18:00:08.214Z'
---

## Overview

MONAI 1.2.0 before 1.6.1 contains an insecure deserialization vulnerability in nnUNetV2Runner that unpickles the postprocessing_file path read from inference_information.json without confining it to the results directory. Attackers who can modify inference_information.json can point it at a malicious pickle elsewhere on the filesystem to execute code when predict_ensemble_postprocessing runs.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.