{"id":"CVE-2026-77602","revision":"0a75150740dc4247906a10002cb13e75","records":[{"revision":"0a75150740dc4247906a10002cb13e75","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-77602","aliases":[],"title":"OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cmd/tlm definitions, and script suites)","description":"OpenC3 COSMOS provides the functionality needed to send commands to and receive data from one or more embedded systems. From 5.1.0 until 7.3.0, authenticated non-administrator users can write content under targets_modified/ that is later executed by multiple configuration paths below the intended code-execution privilege tier. Table and command or telemetry definitions are processed through ConfigParser, PacketConfig, GENERIC_READ_CONVERSION, or GENERIC_WRITE_CONVERSION, allowing ERB rendering or Ruby and Python evaluation, while openc3-cosmos-script-runner-api/scripts/run_suite_analysis.rb executes suite procedure files through require. Storage uploads, screen saves, and script creation can place content in the overlay, and triggering table processing, a cmd/tlm reload, or suite analysis executes the content in cmd-tlm-api, decom microservices, or Script Runner with access to internal credentials and data. This issue is fixed in version 7.3.0.","state":0,"publishedAt":"2026-09-23T18:56:16.967+00:00","modifiedAt":"2026-09-29T02:09:19.382+00:00","affected":[{"ecosystem":"Vendor product","name":"cosmos","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"OpenC3\",\n                    \"product\": \"cosmos\",\n                    \"versions\": [\n                        {\n                            \"version\": \">= 5.1.0, < 7.3.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","score":9.9,"severity":"CRITICAL"}],"references":["https://github.com/OpenC3/cosmos/security/advisories/GHSA-jjq7-m736-w977","https://github.com/OpenC3/cosmos/pull/3488","https://github.com/OpenC3/cosmos/commit/71943352a28128ef3e7e894319d97a656b5cd4f2","https://github.com/OpenC3/cosmos/commit/7a1538a4626f82c0d1540fcaa27ffdcbbd71ff81"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-77602","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-77602","identifiers":["CVE-2026-77602"]},"retained":false,"historicalAffected":[]}],"coverage":[]}