CVE-2026-100846

MONAI before 1.5.2 contains a deserialization of untrusted data vulnerability in the algo_from_pickle function in monai/auto3dseg/utils.py. The function reads a .pkl file and passes its contents to pickle.loads without validating the data source or content. If an application invokes algo_from_pickle on an attacker-supplied pickle file, an object defining __reduce__ is executed during deserialization, resulting in arbitrary code execution in the context of the application.

CVSS v3 7.6 HIGH

7.6^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.0 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required HIGH

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4	Exploit Vendor Advisory
https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserialization	Third Party Advisory
https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:project-monai:monai:*:*:*:*:*:*:*:*

History

30 Sep 2026, 17:44

Type	Values Removed	Values Added
References	~~() https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 -~~	() https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 - Exploit, Vendor Advisory
References	~~() https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserialization -~~	() https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserialization - Third Party Advisory
First Time		Project-monai monai Project-monai
CPE		cpe:2.3:a:project-monai:monai::::::::

30 Sep 2026, 16:17

Type	Values Removed	Values Added
References	~~() https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 -~~	() https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4 -

27 Sep 2026, 02:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-27 02:17

Updated : 2026-10-08 16:17

NVD link : CVE-2026-100846

Mitre link : CVE-2026-100846

CVE.ORG link : CVE-2026-100846

JSON object : View

Products Affected

project-monai

monai

CWE

CWE-502

Deserialization of Untrusted Data

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