CVE-2026-35582 Vulnerability Analysis & Exploit Details

CVE-2026-35582
Vulnerability Scoring

8.8
/10
Severe Risk

Cybersecurity professionals consider CVE-2026-35582 an immediate threat requiring urgent mitigation.

Attack Complexity Details

  • Attack Complexity: Low
    Exploits can be performed without significant complexity or special conditions.
  • Attack Vector: Local
    Vulnerability requires local system access.
  • Privileges Required: Low
    Some privileges are necessary to exploit the vulnerability.
  • Scope: Changed
    Successful exploitation can impact components beyond the vulnerable component.
  • User Interaction: None
    No user interaction is necessary for exploitation.

CVE-2026-35582 Details

Status: Analyzed

Last updated: 🕟 24 Apr 2026, 16:48 UTC
Originally published on: 🕑 18 Apr 2026, 02:16 UTC

Time between publication and last update: 6 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVE-2026-35582 Vulnerability Summary

CVE-2026-35582: 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.

Assessing the Risk of CVE-2026-35582

Access Complexity Graph

The exploitability of CVE-2026-35582 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-35582

CVE-2026-35582 presents an accessible attack vector with minimal effort required. Restricting access controls and implementing security updates are critical to reducing exploitation risks.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-35582, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-35582, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

  • Confidentiality: High
    Exploiting CVE-2026-35582 can result in unauthorized access to sensitive data, severely compromising data privacy.
  • Integrity: High
    CVE-2026-35582 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
  • Availability: High
    CVE-2026-35582 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-35582 References

External References

CWE Common Weakness Enumeration

CWE-116

CAPEC Common Attack Pattern Enumeration and Classification

  • Cross Zone Scripting CAPEC-104 An attacker is able to cause a victim to load content into their web-browser that bypasses security zone controls and gain access to increased privileges to execute scripting code or other web objects such as unsigned ActiveX controls or applets. This is a privilege elevation attack targeted at zone-based web-browser security.
  • User-Controlled Filename CAPEC-73 An attack of this type involves an adversary inserting malicious characters (such as a XSS redirection) into a filename, directly or indirectly that is then used by the target software to generate HTML text or other potentially executable content. Many websites rely on user-generated content and dynamically build resources like files, filenames, and URL links directly from user supplied data. In this attack pattern, the attacker uploads code that can execute in the client browser and/or redirect the client browser to a site that the attacker owns. All XSS attack payload variants can be used to pass and exploit these vulnerabilities.
  • Web Server Logs Tampering CAPEC-81 Web Logs Tampering attacks involve an attacker injecting, deleting or otherwise tampering with the contents of web logs typically for the purposes of masking other malicious behavior. Additionally, writing malicious data to log files may target jobs, filters, reports, and other agents that process the logs in an asynchronous attack pattern. This pattern of attack is similar to "Log Injection-Tampering-Forging" except that in this case, the attack is targeting the logs of the web server and not the application.
  • AJAX Footprinting CAPEC-85 This attack utilizes the frequent client-server roundtrips in Ajax conversation to scan a system. While Ajax does not open up new vulnerabilities per se, it does optimize them from an attacker point of view. A common first step for an attacker is to footprint the target environment to understand what attacks will work. Since footprinting relies on enumeration, the conversational pattern of rapid, multiple requests and responses that are typical in Ajax applications enable an attacker to look for many vulnerabilities, well-known ports, network locations and so on. The knowledge gained through Ajax fingerprinting can be used to support other attacks, such as XSS.

Vulnerable Configurations

  • cpe:2.3:a:nsa:emissary:5.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:5.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:5.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:6.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:6.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.12.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.12.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.13.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.13.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.14.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.15.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.15.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.16.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.16.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.17.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.17.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.17.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.17.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.18.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.18.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.19.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.19.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:7.19.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:7.19.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.0.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.0.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.1.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.2.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.2.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.7.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.7.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.9.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.9.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.10.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.10.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.11.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.11.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.11.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.11.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.12.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.12.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.13.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.13.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.14.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.14.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.15.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.15.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.16.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.16.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.17.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.17.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.18.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.18.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.19.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.19.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.19.1:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.19.1:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.20.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.20.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.21.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.21.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.22.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.22.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.23.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.23.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.24.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.24.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.25.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.25.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.26.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.26.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.27.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.27.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.28.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.28.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.29.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.29.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.30.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.30.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.31.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.31.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.32.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.32.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.33.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.33.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.34.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.34.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.35.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.35.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.36.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.36.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.37.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.37.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.38.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.38.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.39.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.39.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.40.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.40.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.41.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.41.0:*:*:*:*:*:*:*
  • cpe:2.3:a:nsa:emissary:8.42.0:*:*:*:*:*:*:*
    cpe:2.3:a:nsa:emissary:8.42.0:*:*:*:*:*:*:*

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