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 · last modified .
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
EPSS: 0.002 (10.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-wg9g-w2j2-8pgr) (vendor-advisory, Exploit, Vendor Advisory)
- VulnCheck Advisory: MONAI before 1.6.0 Remote Code Execution via NumpyReader (Third Party Advisory, 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.