---
id: CVE-2026-79784
title: >-
  Vocos instantiates a class named by a configuration file without restricting
  which class may be named
summary: >-
  Vocos instantiates a class named by a configuration file without restricting
  which class may be named. instantiate_class in vocos/pretrained.py takes the
  class_path value from the configuration, splits it into a module and an
  attribute, …
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-470
vendor: gemelo-ai
product: vocos
affected:
  - vocos <= 0.1.0
published: '2026-08-25'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T20:43:32.537'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-79784'
references:
  - url: 'https://github.com/gemelo-ai/vocos'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/gemelo-ai/vocos/blob/main/vocos/pretrained.py'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/gemelo-ai/vocos/issues/76'
    label: disclosure@vulncheck.com
  - url: 'https://pypi.org/project/vocos/'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/vocos-through-arbitrary-code-execution-via-unrestricted-class-path-in-model-configuration
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
epss: 0.00571
epssPercentile: 0.44852
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-08-26T16:08:10.918674Z'
ingestedAt: '2026-09-24T15:45:56.697Z'
---

## Overview

Vocos instantiates a class named by a configuration file without restricting which class may be named. instantiate_class in vocos/pretrained.py takes the class_path value from the configuration, splits it into a module and an attribute, imports the module with __import__, resolves the attribute with getattr, and calls the result as args_class(*args, **kwargs) where kwargs is the config's own init_args mapping. No allowlist constrains the dotted path, so a configuration may name any importable callable and supply the arguments it is called with. Vocos.from_hparams reaches this for each of the feature_extractor, backbone and head entries, and Vocos.from_pretrained reaches it with a remote file: it downloads config.yaml from a caller-named Hugging Face repository and passes it straight to from_hparams. Loading a model from a repository the user does not control therefore executes code of the repository owner's choosing in the loading process. The neighbouring torch.load of the downloaded weights is a separate matter and is constrained on PyTorch releases that default weights_only to true, which leaves this path as the reachable one.

## Remediation

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