What is CVE-2026-21851?

CVE-2026-21851 is a medium-severity vulnerability in Project-monai Monai, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-01-07.

How severe is CVE-2026-21851?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Path Traversal in Project-monai Monai

CVE-2026-21851

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 `zi…

Vulnerability class: Path Traversal (Directory Traversal)

EPSS: 0.003 (22.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N.

Affected products

Project-monai Monai — versions <= 1.5.1

Weakness classification (CWE)

CWE-22 — Path Traversal

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-21851?: CVE-2026-21851 is a medium-severity vulnerability in Project-monai Monai, classified under Path Traversal. CVSS score: 5.3/10. Published 2026-01-07.
How severe is CVE-2026-21851?: Medium severity. CVSS v3 base score is 5.3 out of 10.