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I. Basic Information for CVE-2026-21851
Vulnerability Information

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Vulnerability Title
MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download
Source: NVD (National Vulnerability Database)
Vulnerability Description
MONAI (Medical Open Network for AI) is an AI toolkit for health care imaging. In versions up to and including 1.5.1, a Path Traversal (Zip Slip) vulnerability exists in MONAI's `_download_from_ngc_private()` function. The function uses `zipfile.ZipFile.extractall()` without path validation, while other similar download functions in the same codebase properly use the existing `safe_extract_member()` function. Commit 4014c8475626f20f158921ae0cf98ed259ae4d59 fixes this issue.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对路径名的限制不恰当(路径遍历)
Source: NVD (National Vulnerability Database)
Vulnerability Title
MONAI 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MONAI是Project MONAI开源的一个医疗成像AI工具包。 MONAI 1.5.1及之前版本存在路径遍历漏洞,该漏洞源于_download_from_ngc_private函数使用zipfile.ZipFile.extractall时未进行路径验证,可能导致路径遍历攻击。
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
VendorProductAffected VersionsCPESubscribe
Project-MONAIMONAI <= 1.5.1 -
II. Public POCs for CVE-2026-21851
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III. Intelligence Information for CVE-2026-21851
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