CVE-2026-100865: high-severity vulnerability in heymrun heym
Heym before 0.0.53 Remote Code Execution via eval() Sandbox Escape
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.7epss 0.4%
Heym before 0.0.53 evaluates workflow condition expressions using Python's eval() with insufficient sandboxing in the workflow executor service. Authenticated users can edit workflow condition nodes or import malicious templates to execute arbitrary Python and OS commands as the backend process user.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
heymrun · heymRelated CVEs — heymrun heym
In the same product, most dangerous first.
CVE-2026-100864HIGHheym before 0.0.91 Remote Code Execution via Expression EngineEPSS 0.9%CVE-2026-55376HIGHheym Python Tool Sandbox EscapeEPSS 0.5%CVE-2026-101050HIGHHeym before 0.0.53 Authentication Bypass via Telegram WebhookEPSS 0.4%CVE-2026-101049HIGHHeym before 0.0.53 Slack Webhook Signature Verification BypassEPSS 0.4%CVE-2026-45225HIGHHeym < 0.0.21 Path Traversal File Upload via upload_file()EPSS 0.4%CVE-2026-84207MEDIUMHeym before 0.0.98 SSRF via WebSocket endpointsEPSS 0.3%