{
  "schemaVersion": 1,
  "incident": {
    "id": "cve-2026-77602",
    "url": "https://cveboard.org/i/cve-2026-77602",
    "urlPt": "https://cveboard.org/pt/i/cve-2026-77602",
    "json": "https://cveboard.org/i/cve-2026-77602.json",
    "kind": "vuln",
    "live": false,
    "knownExploited": false,
    "severity": "critical",
    "title": "OpenC3 COSMOS: Authenticated remote code execution via the user-writable config overlay (table definitions, cmd/tlm definitions, and script suites)",
    "summary": "COSMOS reads configuration from a user-writable overlay (targets_modified/) before the read-only plugin-installed targets/ tree, and the config subsystem executes code on those files: ConfigParser renders every file as ERB by default, a GENERIC_READ_CONVERSION / GENERIC_WRITE_CONVERSION block is evaluated as code by GenericConversion (Ruby and Python), and the Script Runner suite analysis…",
    "titlePt": "OpenC3 COSMOS: execução remota de código autenticada via overlay de configuração que pode ser escrito pelo usuário (definições de tabelas, definições de cmd/tlm e suítes de scripts)",
    "summaryPt": "COSMOS lê a configuração de um overlay que pode ser escrito pelo usuário (targets_modified/) antes da árvore de plugins instalados somente leitura targets/, e o subsistema de configuração executa código nesses arquivos: ConfigParser renderiza cada arquivo como ERB por padrão, um bloco GENERIC_READ_CONVERSION / GENERIC_WRITE_CONVERSION é avaliado como código pelo GenericConversion (Ruby e Python), e a análise da suíte Script Runner…",
    "cves": [
      "CVE-2026-77602"
    ],
    "ghsa": "GHSA-jjq7-m736-w977",
    "cvss": {
      "score": 9.9,
      "version": "3.1"
    },
    "epss": {
      "percentage": 0.00574,
      "percentile": 0.4659,
      "asOf": "2026-10-23"
    },
    "packages": [
      {
        "ecosystem": "rubygems",
        "name": "openc3",
        "vulnerable": ">= 5.1.0, <= 7.2.1",
        "fixed": "7.3.0",
        "advisory": "GHSA-jjq7-m736-w977"
      }
    ],
    "vendor": null,
    "product": null,
    "kev": null,
    "breach": null,
    "retracted": false,
    "sources": [
      {
        "label": "GitHub Advisory Database",
        "url": "https://github.com/advisories/GHSA-jjq7-m736-w977"
      }
    ],
    "publishedAt": "2026-09-23T18:57:24.000Z",
    "updatedAt": "2026-09-23T18:57:24.000Z"
  },
  "live": false,
  "events": [
    {
      "id": "ghsa:GHSA-jjq7-m736-w977:ghsa_published:2026-09-23T18:57:24.000Z",
      "incidentId": "cve-2026-77602",
      "type": "ghsa_published",
      "at": "2026-09-23T18:57:24.000Z",
      "detail": {
        "ghsa": "GHSA-jjq7-m736-w977",
        "severity": "critical",
        "fixed": "7.3.0"
      }
    }
  ]
}