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CVE-2026-35581— Emissary has a Command Injection via PLACE_NAME Configuration in Executrix

Quick assessment

Affected
NationalSecurityAgency emissary
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.

Emissary是National Security Agency开源的一个分布式 P2P 数据驱动工作流框架。 Emissary 8.39.0之前版本存在操作系统命令注入漏洞，该漏洞源于Executrix工具类构建shell命令时，对配置值（包括PLACE_NAME参数）的清理不足，仅将空格替换为下划线，导致shell元字符可通过，可能导致任意命令执行。

CVSS 7.2 · High EPSS 0.90% · P59

Possible ATT&CK Techniques 1 AI

T1059.004 · Unix Shell
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I. Basic Information for CVE-2026-35581

Vulnerability Information
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Vulnerability Title
Emissary has a Command Injection via PLACE_NAME Configuration in Executrix
Source: CVE Program / CVE List V5
Vulnerability Description
Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, the Executrix utility class constructed shell commands by concatenating configuration-derived values — including the PLACE_NAME parameter — with insufficient sanitization. Only spaces were replaced with underscores, allowing shell metacharacters (;, |, $, `, (, ), etc.) to pass through into /bin/sh -c command execution. This vulnerability is fixed in 8.39.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:H/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
Emissary 操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Emissary是National Security Agency开源的一个分布式 P2P 数据驱动工作流框架。 Emissary 8.39.0之前版本存在操作系统命令注入漏洞，该漏洞源于Executrix工具类构建shell命令时，对配置值（包括PLACE_NAME参数）的清理不足，仅将空格替换为下划线，导致shell元字符可通过，可能导致任意命令执行。
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
NationalSecurityAgency emissary < 8.39.0 -

II. Public POCs for CVE-2026-35581

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III. Intelligence Information for CVE-2026-35581

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Vendor Advisories for CVE-2026-35581 (1)

Same Patch Batch · NationalSecurityAgency · 2026-04-07 · 4 CVEs total

CVE-2026-35580 9.1 CRITICAL Emissary has GitHub Actions Shell Injection via Workflow Inputs
CVE-2026-35583 5.3 MEDIUM Emissary has a Path Traversal via Blacklist Bypass in Configuration API
CVE-2026-35571 4.8 MEDIUM Emissary has Stored XSS via Navigation Template Link Injection

IV. Related Vulnerabilities

Same product: emissary
Same vendor: NationalSecurityAgency
Same weakness: CWE-78

V. Comments for CVE-2026-35581

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