MONAI: Unsafe deserialization in NumpyReader allows arbitrary code execution via malicious .npy files

Summary The NumpyReader class in monai/data/imagereader.py unconditionally uses np.loadname, allowpickle=True line 1276, enabling arbitrary code execution when loading a crafted .npy or .npz file. This affects all MONAI versions up to and including the latest commit 5b71547. The allowpickle...

MONAI vulnerable to OS command injection

Comment from JPCERT/CC We are submitting the report again as we have yet to receive any responses from you after submitting it on February 5 and March 11. It would be greatly appreciated if you could send us a message after confirming it so that we can follow up the case by email. Summary MONAI...

Incomplete Fix in MONAI: algo_from_pickle() pickle.loads() RCE still present in v1.5.2 despite GHSA-89gg-p5r5-q6r4 claiming patch

Summary GHSA-89gg-p5r5-q6r4 claims the pickle deserialization vulnerability in algofrompickle was fixed in v1.5.2. However, monai/auto3dseg/utils.py has not been modified since 2024-07-12 — 18 months before v1.5.2 was released 2026-01-29. All three pickle.loads calls remain unchanged. The fix was...

PYSEC-2026-1678 MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

Summary A Path Traversal Zip Slip vulnerability exists in MONAI's downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar download functions in the same codebase properly use the existing safeextractmember function. This appears t...

MONAI: Unsafe functions lead to pickle deserialization rce

Summary The algofrompickle function in monai/auto3dseg/utils.py causes pickle.loadsdatabytes to be executed, and it does not perform any validation on the input parameters. This ultimately leads to insecure deserialization and can result in code execution vulnerabilities. Details poc import pickl...

Deserialization of Untrusted Data

Overview monai is an AI Toolkit for Healthcare Imaging Affected versions of this package are vulnerable to Deserialization of Untrusted Data in the algofrompickle function in monai/auto3dseg/utils.py. An attacker can execute arbitrary code by providing a crafted pickle file that is deserialized...

GHSA-89GG-P5R5-Q6R4 MONAI: Unsafe functions lead to pickle deserialization rce

Summary The algofrompickle function in monai/auto3dseg/utils.py causes pickle.loadsdatabytes to be executed, and it does not perform any validation on the input parameters. This ultimately leads to insecure deserialization and can result in code execution vulnerabilities. Details poc import pickl...

Path Traversal

MONAI is vulnerable to a Path Traversal. The vulnerability is due to the use of zipfile.ZipFile.extractall without proper path validation in the downloadfromngcprivate function, which allows an attacker to craft a malicious ZIP archive that writes files outside the intended extraction directory a...

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 downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar...

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 downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar...

CVE-2026-21851 MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

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 downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar...

CVE-2026-21851

MONAI has a Path Traversal (Zip Slip) vulnerability in its NGC private bundle download path. In MONAI

CVE-2026-21851 MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

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 downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar...

EUVD-2026-1039

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 downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar...

MONAI 路径遍历漏洞

MONAI is a medical imaging AI toolkit open-sourced by Project MONAI. A path traversal vulnerability exists in MONAI 1.5.1 and earlier versions, which stems from the downloadfromngcprivate function using zipfile.ZipFile.extractall without path validation, which could lead to a path traversal attac...

Directory Traversal

Overview monai is an AI Toolkit for Healthcare Imaging Affected versions of this package are vulnerable to Directory Traversal via the downloadfromngcprivate function. An attacker can write files outside the intended extraction directory by providing a crafted ZIP archive containing path traversa...

GHSA-9RG3-9PVR-6P27 MONAI has Path Traversal (Zip Slip) in NGC Private Bundle Download

Summary A Path Traversal Zip Slip vulnerability exists in MONAI's downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar download functions in the same codebase properly use the existing safeextractmember function. This appears t...

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

Summary A Path Traversal Zip Slip vulnerability exists in MONAI's downloadfromngcprivate function. The function uses zipfile.ZipFile.extractall without path validation, while other similar download functions in the same codebase properly use the existing safeextractmember function. This appears t...

PT-2026-2101

Name of the Vulnerable Software and Affected Versions MONAI versions up to and including 1.5.1 Description MONAI Medical Open Network for AI is an AI toolkit for health care imaging. A Path Traversal Zip Slip issue exists in the download from ngc private function. This function utilizes...

Deserialization Of Untrusted Data

monai is vulnerable to Unsafe Deserialization. The vulnerability is due to the pickleoperations function automatically deserializing dictionary key-value pairs with a specific suffix without any validation, An attackers can supply crafted pickle payloads to execute arbitrary code when those value...