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CVE-2026-93348— Unsloth Zoo Code Injection via model_type in config.json

Quick assessment

Affected
unslothai unsloth-zoo
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Unsloth Zoo 在 2025.9.9 至 2026.8.14 之前版本（即 Unsloth 2025.9.9 至 2026.8.19 版本中实现的组件）存在代码注入漏洞。该漏洞位于模型加载的编译路径中， 文件中的 函数从嵌套的模型配置中收集 值时，未对字符进行白名单校验，导致换行符和任意 Python 源代码在规范化处理后仍能保留。 攻击者可在恶意模型的 文件中，于嵌套的 字段中嵌入一个换行符，从而终止生成的 import 语句，并通过 中的 执行任意 Python 代码。当该模型被加载用于训练或推理时，攻

CVSS 8.1 · High
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I. Basic Information for CVE-2026-93348

Vulnerability Information
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Vulnerability Title
Unsloth Zoo Code Injection via model_type in config.json
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
unslothai unsloth-zoo 2025.9.9 ~ 2026.8.14 -
unslothai unsloth 2025.9.9 ~ 2026.8.20 -

II. Public POCs for CVE-2026-93348

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III. Intelligence Information for CVE-2026-93348

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Other References for CVE-2026-93348 (4)

IV. Related Vulnerabilities

Same weakness: CWE-94

V. Comments for CVE-2026-93348

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