---
id: CVE-2026-93348
title: >-
  Unsloth Zoo versions 2025.9.9 before 2026.8.14, as implemented in Unsloth
  2025.9.9 through 2026.8.19, contains a code injection vulnerability in the
  model-loading compile path where the get_transformers_model_type() function in
  hf_utils.…
summary: >-
  Unsloth Zoo versions 2025.9.9 before 2026.8.14, as implemented in Unsloth
  2025.9.9 through 2026.8.19, contains a code injection vulnerability in the
  model-loading compile path where the get_transformers_model_type() function in
  hf_utils.…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-94
vendor: unslothai
product: unsloth-zoo
affected:
  - unsloth-zoo >= 2025.9.9 < 2026.8.14
  - unsloth >= 2025.9.9 < 2026.8.20
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T16:17:17.643'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-93348'
references:
  - url: 'https://github.com/unslothai/unsloth-zoo/pull/1083'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/unslothai/unsloth-zoo/pull/1108'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/unslothai/unsloth/commit/92ee0207a38ebc8af1a0e678aa92d7e7d901ea0d
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/unsloth-zoo-code-injection-via-model-type-in-config-json
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T16:15:01.376Z'
---

## Overview

Unsloth Zoo versions 2025.9.9 before 2026.8.14, as implemented in Unsloth 2025.9.9 through 2026.8.19, contains a code injection vulnerability in the model-loading compile path where the get_transformers_model_type() function in hf_utils.py collects model_type values from nested model configurations without enforcing a character allowlist, allowing newlines and arbitrary Python source to survive normalization. Attackers can embed a newline in a nested model_type value within a malicious model's config.json to terminate the generated import statement and execute arbitrary Python code via exec() in unsloth_compile_transformers(), achieving remote code execution as the loading user when the model is loaded for training or inference.

## Remediation

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