CVE-2026-100865

High

Description

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.

SeverityHigh

CVSS8.8

Exploit probability—

ProductHeym

PublishedSep 27, 2026

First seenSep 27, 2026

Weakness typeCWE-94Code injection

How to fix

Update

heymrun heym0.0.53 or later

Patches

github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83

Vendor advisories

github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h

Affected products

Product	Affected versions	Fixed in
heymrun heym	v < 0.0.53	0.0.53

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