CVE-2026-35580
CRITICAL SEVERITYCVSS Score & Metrics
Base Score
9.1 / 10
Vector String
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Vulnerability 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.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-77
Source
NVD
Vendor
NationalSecurityAgency
Product
emissary
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