CVE-2026-21851CWE-22

MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

Medium · published January 7, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
28.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00357 · 28.3th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-01-07T22:27Z
EPSS history
Timeline
  • 07 JAN 22:27Z
    MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download
    cvelistv5