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CVE-2026-90444— OS Command Injection in Malcolm

Quick assessment

Affected
CISA Malcolm
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

CISA Malcolm是美国CISA政府部门开源的一款面向威胁情报与安全审计的网络流量分析工具。 CISA Malcolm v26.06.0之前版本存在命令注入漏洞，该漏洞源于文件传输接口接受攻击者控制的文件名且未限制shell元字符，自动化进程随后使用上传文件名构造并运行系统命令，可能导致已认证攻击者执行任意操作系统命令，读取和修改日志数据，并可能为进一步的内部网络移动提供立足点。

CVSS 8.8 · High EPSS 0.30% · P22

Affected Version Matrix 2

VendorProduct Version RangeStatus
CISA Malcolm < v26.06.0 affected
v26.06.0 unaffected
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I. Basic Information for CVE-2026-90444

Vulnerability Information
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Vulnerability Title
OS Command Injection in Malcolm
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
CISA Malcolm 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CISA Malcolm是美国CISA政府部门开源的一款面向威胁情报与安全审计的网络流量分析工具。 CISA Malcolm v26.06.0之前版本存在命令注入漏洞，该漏洞源于文件传输接口接受攻击者控制的文件名且未限制shell元字符，自动化进程随后使用上传文件名构造并运行系统命令，可能导致已认证攻击者执行任意操作系统命令，读取和修改日志数据，并可能为进一步的内部网络移动提供立足点。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
CISA Malcolm 0 ~ v26.06.0 -

II. Public POCs for CVE-2026-90444

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III. Intelligence Information for CVE-2026-90444

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Vendor Advisories for CVE-2026-90444 (1)

Same Patch Batch · CISA · 2026-09-11 · 15 CVEs total

CVE-2026-90456 8.1 HIGH Use of default credentials in Malcolm
CVE-2026-90449 6.5 MEDIUM Missing Authentication for Critical Function in Malcolm
CVE-2026-90448 6.5 MEDIUM Missing Authorization in Malcolm
CVE-2026-90447 6.5 MEDIUM Authentication Bypass by Spoofing in Malcolm
CVE-2026-90445 6.5 MEDIUM Path Traversal in Malcolm
CVE-2026-90457 6.2 MEDIUM CISA Malcolm 加密问题漏洞
CVE-2026-90451 5.9 MEDIUM Use of Default Credentials in Malcolm
CVE-2026-90443 5.4 MEDIUM Cross-site Scripting in Malcolm
CVE-2026-90452 5.3 MEDIUM Improper certificate validation in Malcolm
CVE-2026-90454 4.3 MEDIUM Missing authorization in Malcolm
CVE-2026-90446 4.3 MEDIUM Server-Side Request Forgery in Malcolm
CVE-2026-90450 4.3 MEDIUM Incorrect Authorization in Malcolm
CVE-2026-90455 3.7 LOW Dependency on vulnerable third-party component in Malcolm
CVE-2026-90453 3.5 LOW Open Redirect in Malcolm

IV. Related Vulnerabilities

Same product: Malcolm
Same vendor: CISA
Same weakness: CWE-78

V. Comments for CVE-2026-90444

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