CVE-2026-100865CWE-94code-injection

CVE-2026-100865

High · published September 27, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
24.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00323 · 24.0th percentile
Weakness
CWE-94 · Improper Control of Generation of Code ('Code Injection')
Published
2026-09-27T06:17Z
References (3)
https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83 · [email protected]https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h · [email protected]https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 28 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 27 SEP 01:28Z
    Heym before 0.0.53 Multiple RCE and Authentication Bypass Vulnerabilities
    cvelistv5