Description

Emissary is a P2P based data-driven workflow engine. Prior to 8.39.0, GitHub Actions workflow files contained shell injection points where user-controlled workflow_dispatch inputs were interpolated directly into shell commands via ${{ }} expression syntax. An attacker with repository write access could inject arbitrary shell commands, leading to repository poisoning and supply chain compromise affecting all downstream users. This vulnerability is fixed in 8.39.0.

INFO

Published Date :

2026-04-07T15:55:56.074Z

Last Modified :

2026-04-07T18:25:26.662Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-35580 vulnerability.

Vendors Products
Nationalsecurityagency
  • Emissary
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-35580.

URL Resource
https://github.com/NationalSecurityAgency/emissary/pull/1286 cve-icon cve-icon
https://github.com/NationalSecurityAgency/emissary/pull/1288 cve-icon cve-icon
https://github.com/NationalSecurityAgency/emissary/security/advisories/GHSA-3g6g-gq4r-xjm9 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
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