---
title: "CVE-2026-77601: OpenC3 COSMOS - Command Injection"
description: "OpenC3 COSMOS 5.12.0 to 7.3.0 contains a command injection caused by unsanitized pypi_url setting interpolation in shell commands during plugin installation, letting authenticated actors execute arbitrary OS commands as the openc3 service user, exploit requires authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-77601/
---

# CVE-2026-77601 OpenC3 COSMOS - Command Injection

OpenC3 COSMOS 5.12.0 to 7.3.0 contains a command injection caused by unsanitized pypi\_url setting interpolation in shell commands during plugin installation, letting authenticated actors execute arbitrary OS commands as the openc3 service user, exploit requires authentication.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.58% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-77601)

## Details

Type

Command Injection

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

23 September 2026

Updated

15 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Upgrade to version 7.3.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-77601](https://nvd.nist.gov/vuln/detail/CVE-2026-77601)
- [https://github.com/OpenC3/cosmos/commit/be70d1d836c83c3b084e768e31a399312d4cbe0b](https://github.com/OpenC3/cosmos/commit/be70d1d836c83c3b084e768e31a399312d4cbe0b)
- [https://github.com/OpenC3/cosmos/pull/3489](https://github.com/OpenC3/cosmos/pull/3489)
- [https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f](https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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