Deserialization in Project-Monai Monai
CVE-2026-100845
MONAI before 1.6.0 contains an unsafe deserialization vulnerability in the NumpyReader class that unconditionally uses numpy.load with allow_pickle=True when loading .npy and .npz files. Attackers can craft malicious .npy files with pickle payloads that execute arbitrary code when loaded through MONAI's standard data pipeline.
Vulnerability class: Insecure Deserialization
Published .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/Project-MONAI/MONAI/security/advisories/GHSA-wg9g-w2j2-8pgr (vendor-advisory)
- www.vulncheck.com/advisories/monai-before-1.6.0-remote-code-execution-via-numpy… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-100845?
- CVE-2026-100845 is a high-severity vulnerability in Project-Monai Monai, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2026-09-27.
- How severe is CVE-2026-100845?
- High severity. CVSS v3 base score is 7.8 out of 10.