RCE in Project-Monai Monai
CVE-2026-100840
MONAI through 1.6.0 contains a remote code execution vulnerability in the bundle configuration engine that resolves _target_ values to arbitrary importable callables without an allow list and passes $ expressions to Python eval(). Attackers can publish a malicious bundle with crafted configuration containing arbitrary code that executes when a victim loads the bundle using monai.bundle.load() or monai.bundle.run().
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 (24.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 24th percentile — 24.4% 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-873f-pvrv-4x83) (vendor-advisory, Exploit, Mitigation, Vendor Advisory)
- VulnCheck Advisory: MONAI through 1.6.0 Remote Code Execution via bundle configuration (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-100840?
- CVE-2026-100840 is a high-severity vulnerability in Project-Monai Monai, classified under Eval Injection. CVSS score: 7.8/10. Published 2026-09-27.
- How severe is CVE-2026-100840?
- High severity. CVSS v3 base score is 7.8 out of 10.