CVE-2026-21851

MEDIUM

5.3

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.

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredNONE

User InteractionREQUIRED

Published1/7/2026

Last Modified2/2/2026

Sourcenvd

Honeypot Sightings0

Affected Products

project-monai:monai

Weaknesses (CWE)

CWE-22

References

https://github.com/Project-MONAI/MONAI/commit/4014c8475626f20f158921ae0cf98ed259ae4d59(security-advisories@github.com)

https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-9rg3-9pvr-6p27(security-advisories@github.com)

https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-9rg3-9pvr-6p27(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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