CVE-2026-84202— ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading
Quick assessment
Affected
modelscope modelscope
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.
ModelScope是ModelScope组织的一个模型服务化与推理训练平台。 ModelScope 1.40.0及之前版本存在反序列化注入漏洞，该漏洞源于使用PyYAML的不安全yaml.Loader解析模型配置文件，攻击者可构造恶意模型仓库，导致任意代码执行。
Affected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| modelscope | modelscope | ≤ 1.40.0 |
affected |
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I. Basic Information for CVE-2026-84202
Vulnerability Information
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Vulnerability Title
ModelScope through 1.40.0 Unsafe YAML Deserialization in Model Config Loading
Source: CVE Program / CVE List V5
Vulnerability Description
ModelScope uses PyYAML's unsafe yaml.Loader to parse model configuration files, allowing arbitrary code execution through Python object construction tags. Attackers can craft malicious model repositories with poisoned configuration files that execute code when loaded by users.
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:H
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5
Vulnerability Title
ModelScope 反序列化注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ModelScope是ModelScope组织的一个模型服务化与推理训练平台。 ModelScope 1.40.0及之前版本存在反序列化注入漏洞，该漏洞源于使用PyYAML的不安全yaml.Loader解析模型配置文件，攻击者可构造恶意模型仓库，导致任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| modelscope | modelscope | 0 ~ 1.40.0 | - |
|
II. Public POCs for CVE-2026-84202
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-84202 (1)
Proof of Concept for CVE-2026-84202 (1)
Vendor Pages for CVE-2026-84202 (1)
Other References for CVE-2026-84202 (1)
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V. Comments for CVE-2026-84202
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