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CVE-2026-100846

7.6 · HIGH

MONAI before 1.5.2 contains a deserialization of untrusted data vulnerability in the algo_from_pickle function in monai/auto3dseg/utils.py.

Published Sep 27, 2026project-monaiCWE-502EPSS 0.36%

Overview

CVE-2026-100846 is a high-severity vulnerability affecting project-monai monai. It was published on September 27, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from project-monai. Update monai to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
project-monaimonai>= 0, < 1.5.2Affected

References

GitHubgithub.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4Refwww.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserializationGitHubgithub.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4

How CyberStrike helps

Frequently asked questions

What is CVE-2026-100846?

CVE-2026-100846 is a high-severity vulnerability affecting project-monai monai. It was published on September 27, 2026 and has a CVSS 3.1 base score of 7.6 (HIGH).

How severe is CVE-2026-100846?

This vulnerability has a CVSS 3.1 base score of 7.6, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-100846?

Check the references section for vendor advisories and patches from project-monai. Update monai to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-100846?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-100846 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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