OS Command Injection in Malcolm
A file-transfer interface that requires valid credentials accepts attacker-controlled filenames without restricting shell metacharacters. An automated process later constructs and runs a system command using the uploaded file's name, allowing an authenticated attacker to embed and execute arbitrary operating system commands with the privileges of that process. This allows an attacker to read and modify ingested log data, and could provide a foothold for further movement within the internal network.
CVE-2026-90444
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-90444
Malcolm
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://github.com/cisagov/Malcolm",
"vendor": "CISA",
"product": "Malcolm",
"versions": [
{
"status": "affected",
"version": "0",
"lessThan": "v26.06.0",
"versionType": "custom"
},
{
"status": "unaffected",
"version": "v26.06.0"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-90444
Source reference:
/cveMetadata/cveId
Publisher severity
high
Source reference: /containers/cna/metrics
- Event
- #8191 · Revision 1
- Added to Heist Feed
- Publisher date