CVE-2026-100846
MONAI before 1.5.2 Remote Code Execution via Pickle Deserialization
- State
- Published
- Severity
- 8.8 High
- Published
- Sep 27, 2026
- Updated
- Oct 8, 2026
- Reserved
- Sep 27, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.8 High | CVSS:4.0/AV:N/AC:H/AT:P/PR:H/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H | VulnCheck |
| 3.1 | 7.6 High | CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-502 Deserialization of Untrusted Data
Affected Products
| Product | Versions |
|---|---|
MONAIProject-MONAI |
|
References
- GitHub Security Advisory (GHSA-89gg-p5r5-q6r4)vendor-advisory
- VulnCheck Advisory: MONAI before 1.5.2 Remote Code Execution via Pickle Deserializationthird-party-advisory
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