CVE-2026-100844: MONAI · OS Command Injection
Affects MONAISource CVE Database V5
Public exploit available · CVSS 8.6 High : upgrade to 1.6.0 as a priority.
Data as of 9 Nov 2026, 23:24 UTC
- EPSS
- 0.9% chance of exploitation in 30 days – higher than 60% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- CISA SSVC
- Exploitation
- Proof of concept is public or traded
- Automatable
- Attackers cannot reliably automate steps 1–4 of the kill chain
- Technical impact
- Total control over the software or total information disclosure
CISA SSVC assessment, 2026-09-28.
- Patch
- Available – fixed in 1.6.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NExploitation evidence
t = 0 is the CVE’s publication on cve.org
Disclosed: evidence found.
CVE published 27 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: evidence found.
CISA SSVC: proof of concept public
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
Timeline
CVE ID reserved
by VulnCheck
, 1 hour before disclosure
CVE published
on cve.org
, t = 0
CISA SSVC assessment
proof of concept public
, 39 hours after disclosure
In Threat Radar
record ingested
, 29 days after disclosure
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), CISA SSVC, the Metasploit, Exploit-DB and nuclei-templates index as of 10 Nov 2026.
What to do
Upgrade MONAI to 1.6.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| Project-MONAIMONAI | Affected
| Fixed in
|
PyPIMONAIpkg:pypi/MONAIOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade MONAI to version 1.6.0 or later, where this vulnerability is fixed. Until then, avoid loading untrusted YAML configuration files or passing untrusted CLI/kwargs arguments to the nnUNetV2Runner component. Validate and sanitize all user inputs before use. No other vendor advisory mitigation is provided.
Description
MONAI versions before 1.6.0 contain an OS command injection vulnerability in the nnUNetV2Runner component. User-controlled inputs from YAML configuration files and CLI/kwargs arguments are unsafely concatenated into shell commands without validation or quoting. This allows an attacker who can supply a crafted configuration file to execute arbitrary commands with the privileges of the user running the MONAI job. The issue is fixed in version 1.6.0.