CVE-2026-21851

MEDIUM

MONAI <= 1.5.1 - Path Traversal via _download_from_ngc_private() Zip Slip

Title source: llm
STIX 2.1

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.

References (2)

Core 2

Scores

CVSS v3 5.3
EPSS 0.0002
EPSS Percentile 6.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-22
Status published
Products (2)
project-monai/monai < 1.5.1
pypi/monai 0 - 1.5.2PyPI
Published Jan 07, 2026
Tracked Since Feb 18, 2026