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.

• CWE-502

• https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4Exploit, Vendor Advisory
• https://www.vulncheck.com/advisories/monai-before-1.5.2-remote-code-execution-via-pickle-deserializationThird Party Advisory
• https://github.com/Project-MONAI/MONAI/security/advisories/GHSA-89gg-p5r5-q6r4Exploit, Vendor Advisory

Published

Sep 27, 2026

Last Modified

Oct 8, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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