Deserialization in Project-Monai Monai
CVE-2026-100843
MONAI versions before 1.6.0 contain a remote code execution vulnerability in the algo_from_pickle() function due to unsafe pickle.loads() deserialization in monai/auto3dseg/utils.py. Attackers can craft malicious pickle files that execute arbitrary system commands when deserialized by the vulnerable function.
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: 0.003 (23.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 23.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-qxq5-qhx6-94qw) (vendor-advisory, Exploit, Vendor Advisory)
- VulnCheck Advisory: MONAI before 1.6.0 Remote Code Execution via algo_from_pickle (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-100843?
- CVE-2026-100843 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-2026-100843?
- High severity. CVSS v3 base score is 7.8 out of 10.