Vulnerability · Published Sep 27, 2026 · Assigned by VulnCheck
CVE-2026-100843MONAI before 1.6.0 Remote Code Execution via algo_from_pickle
High 7.8
In plain English
A high-severity unsafe deserialization in MONAI from Project-MONAI. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.8High
Exploit odds (30 days)0.3%top 76.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | monai | 1.6.0 | GHSA-qxq5-qhx6-94qw |
| PyPI | monai | 1.6.0 | PYSEC-2026-4018 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Project-MONAI | MONAI | 0 – before 1.6.0 |
Weakness: CWE-502 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-qxq5-qhx6-94qw) vendor-advisory
- VulnCheck Advisory: MONAI before 1.6.0 Remote Code Execution via algo_from_pickle third-party-advisory