{"id":"CVE-2026-77601","title":"OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems","summary":"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-ap…","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-78"],"vendor":"OpenC3","product":"cosmos","affected":["cosmos >= 5.12.0, < 7.3.0"],"patched":["openc3 7.3.0"],"published":"2026-09-23","updated":"2026-09-23","sourceUpdated":"2026-09-23T20:17:16.027","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-77601","references":[{"url":"https://github.com/OpenC3/cosmos/commit/be70d1d836c83c3b084e768e31a399312d4cbe0b","label":"security-advisories@github.com"},{"url":"https://github.com/OpenC3/cosmos/pull/3489","label":"security-advisories@github.com"},{"url":"https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f","label":"security-advisories@github.com"},{"url":"https://github.com/OpenC3/cosmos/security/advisories/GHSA-vp3w-52v9-q57f","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://github.com/OpenC3/cosmos/releases/tag/v7.2.1"},{"url":"https://github.com/advisories/GHSA-vp3w-52v9-q57f"}],"tags":["nvd","cve.org","exploit-available","ghsa","rubygems"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"total","timestamp":"2026-09-23T19:28:30.534617Z"},"aliases":["GHSA-vp3w-52v9-q57f"],"ecosystem":"rubygems","ingestedAt":"2026-09-23T19:31:04.467Z","epss":0.00581,"epssPercentile":0.45328,"slug":"CVE-2026-77601","body":"## Overview\n\nOpenC3 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Package advisory (CVE-2026-77601)\n\nAffected packages:\n\n- `openc3 >= 5.12.0, <= 7.2.1`\n\nPatched in:\n\n- `openc3 7.3.0`\n\nSource: https://github.com/advisories/GHSA-vp3w-52v9-q57f","depth":"midnight","depthScore":61,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":209882,"id":"CVE-2026-77601","ts":1790195576512,"field":"exploit_available","old":"false","new":"true"}]}