---
title: "openc3 — CVE-2026-77601"
description: "A remote code execution flaw affects the RubyGems package openc3. Affected versions: >= 5.12.0, <= 7.2.1. Fixed from version 7.3.0. CVSS score 8.8."
canonical: https://inyourgeek.com/en/failles-de-securite/2026-09-23-cve-2026-77601
type: faille-de-securite
author: "Sébastien Soulier"
publisher: "InYourGeek"
language: en
datePublished: 2026-09-23
dateModified: 2026-09-23
---
# openc3 — CVE-2026-77601

A remote code execution flaw affects the RubyGems package openc3. Affected versions: >= 5.12.0, <= 7.2.1. Fixed from version 7.3.0. CVSS score 8.8.

## What to do

Update openc3 to 7.3.0 or later.

| Fact | Value |
| --- | --- |
| Package | openc3 |
| Ecosystem | RubyGems |
| Class | Remote code execution |
| Affected versions | >= 5.12.0, <= 7.2.1 |
| Fixed version | 7.3.0 |
| CVSS | 8.8 |
| CVE | CVE-2026-77601 |
| GHSA | GHSA-vp3w-52v9-q57f |
| Published on | September 23, 2026 |
| Severity | High |

## Sources

- [GitHub Security Advisory — GHSA-vp3w-52v9-q57f](https://github.com/advisories/GHSA-vp3w-52v9-q57f) — GitHub Security Advisories
- [NVD — CVE-2026-77601](https://nvd.nist.gov/vuln/detail/CVE-2026-77601) — NVD

---

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