CVE-2026-77601 Details
Description
OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.12.0 until 7.3.0, an authenticated actor can write the pypi_url setting through set_setting at POST /openc3-api/api, then cause OpenC3::PluginModel.install_phase2 in openc3/lib/openc3/models/plugin_model.rb to interpolate the value into a shell command while installing a plugin with Python dependency metadata. Shell metacharacters in the setting are interpreted by the command shell, allowing arbitrary operating-system commands to run as the openc3 service user with access to Redis and bucket credentials. Open-source deployments permit any authenticated user to reach the affected operations, while Enterprise deployments require an administrator. This issue is fixed in version 7.3.0.
A command injection vulnerability has been identified in OpenC3 COSMOS versions 5.12.0 prior to 7.3.0. This issue allows authenticated users to execute arbitrary operating system commands as the openc3 service user. The vulnerability arises because the pypi_url setting, which can be written by users, is interpolated into a shell command during the installation of plugins with Python dependency metadata. Open-source deployments of OpenC3 COSMOS allow any authenticated user to exploit this vulnerability, while Enterprise deployments require administrative privileges.
Users can update to OpenC3 COSMOS version 7.3.0 or later, where this vulnerability has been patched.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Sep 23, 2026CISA-ADP
Assessed Sep 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f | CISA-ADP | AdvisoryExploitRemedyVendor |
| https://github.com/OpenC3/cosmos/commit/be70d1d836c83c3b084e768e31a399312d4cbe0b | [email protected] | Source CodeVendor |
| https://github.com/OpenC3/cosmos/pull/3489 | [email protected] | Issue TrackingVendor |
| https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f | [email protected] | AdvisoryExploitRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-78 | Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| OpenC3 COSMOS | >= 5.12.0, <= 7.2.1 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Sep 23, 2026 | CVE Modified | CISA-ADP |
| Sep 23, 2026 | New CVE Received | [email protected] |