---
id: CVE-2026-112086
title: ESPnet Inference Model inference_model.py build_model deserialization
summary: >-
  A vulnerability was found in ESPnet up to 202610.post2. This affects the
  function build_model of the file espnet3/publication/inference_model.py of the
  component Inference Model Handler. The manipulation of the argument _target_
  results …
severity: medium
cvss: 6.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'
cvssSource: cna
cwe:
  - CWE-502
  - CWE-20
product: ESPnet
affected:
  - ESPnet 202610.post2
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-19T17:31:51.406932Z'
exploitAvailable: true
published: '2026-10-19'
updated: '2026-10-19'
sourceUpdated: '2026-10-19T17:32:44.974Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-112086'
references:
  - url: 'https://vuldb.com/vuln/421831'
    label: >-
      VDB-421831 | ESPnet Inference Model inference_model.py build_model
      deserialization
  - url: 'https://vuldb.com/vuln/421831/cti'
    label: 'VDB-421831 | CTI Indicators (IOB, IOC, IOA)'
  - url: 'https://vuldb.com/cve/CVE-2026-112086'
    label: CVE-2026-112086 | CVE Analysis and Report
  - url: 'https://vuldb.com/submit/1011320'
    label: >-
      Submit #1011320 | ESPnet espnet up to 202610.post2 (latest PyPI release);
      git master @ bc6dd4a also verified Insecure Deserialization
  - url: 'https://github.com/espnet/espnet/issues/6828'
  - url: 'https://github.com/espnet/espnet/pull/6829'
  - url: 'https://github.com/user-attachments/files/32957363/poc.zip'
  - url: >-
      https://github.com/espnet/espnet/commit/f217b24f06de55e332cab10231469d5890dbbe00
  - url: 'https://github.com/espnet/espnet/'
tags:
  - cve.org
  - exploit-available
epss: 0.00316
epssPercentile: 0.23051
ingestedAt: '2026-10-19T07:09:59.595Z'
---

## Overview

A vulnerability was found in ESPnet up to 202610.post2. This affects the function build_model of the file espnet3/publication/inference_model.py of the component Inference Model Handler. The manipulation of the argument _target_ results in deserialization. It is possible to launch the attack remotely. The exploit has been made public and could be used. The patch is identified as f217b24f06de55e332cab10231469d5890dbbe00. It is best practice to apply a patch to resolve this issue.

## Affected

- `ESPnet 202610.post2`

## Remediation

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