AUGUST 4, 2026
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Case File

CVE-2026-35580

CRITICAL · CVSS 9.1 EPSS 0.57% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-04-07 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects GitHub. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-35580
Severity
CRITICAL
CVSS
9.1
EPSS
0.57%
GitHub

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)