CRITICAL SeverityCVSS 3.19.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVE-2026-35580

Last updated Apr 07, 2026 · Published Apr 07, 2026

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.

Affected products

1 listed

NationalSecurityAgency:emissary

Mappings

CWE

CWE-77

CAPEC

None listed.