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CVE-2026-35582— Emissary has an OS Command Injection via Unvalidated IN_FILE_ENDING / OUT_FILE_ENDING 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 8.42.0及之前版本存在安全漏洞，该漏洞源于Executrix.getCommand()函数将临时文件路径插入shell命令字符串时未进行转义或输入验证，可能导致OS命令注入。

CVSS 8.8 · High EPSS 1.07% · P64

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-35582

Vulnerability Information
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Vulnerability Title
Emissary has an OS Command Injection via Unvalidated IN_FILE_ENDING / OUT_FILE_ENDING in Executrix
Source: CVE Program / CVE List V5
Vulnerability Description
Emissary is a P2P based data-driven workflow engine. In versions 8.42.0 and below, Executrix.getCommand() is vulnerable to OS command injection because it interpolates temporary file paths into a /bin/sh -c shell command string without any escaping or input validation. The IN_FILE_ENDING and OUT_FILE_ENDING configuration keys flow directly into these paths, allowing a place author who can write or modify a .cfg file to inject arbitrary shell metacharacters that execute OS commands in the JVM process's security context. The framework already sanitizes placeName via an allowlist before embedding it in the same shell string, but applies no equivalent sanitization to file ending values. No runtime privileges beyond place configuration authorship, and no API or network access, are required to exploit this vulnerability. This is a framework-level defect with no safe mitigation available to downstream implementors, as Executrix provides neither escaping nor documented preconditions against metacharacters in file ending inputs. This issue has been fixed in version 8.43.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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 安全漏洞
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 8.42.0及之前版本存在安全漏洞，该漏洞源于Executrix.getCommand()函数将临时文件路径插入shell命令字符串时未进行转义或输入验证，可能导致OS命令注入。
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 < 8.43.0 -

II. Public POCs for CVE-2026-35582

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III. Intelligence Information for CVE-2026-35582

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Patches & Fixes for CVE-2026-35582 (1)

Vendor Advisories for CVE-2026-35582 (1)

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-35582

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