CVE-2026-25044: Budibase Command Injection Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-gjw9-34gf-rp6m",
  "modified" : "2026-04-09T14:28:10Z",
  "published" : "2026-04-03T21:53:32Z",
  "aliases" : [ "CVE-2026-25044" ],
  "summary" : "Budibase: Command Injection in Bash Automation Step",
  "details" : "**Location**: `packages/server/src/automations/steps/bash.ts`  \n\n#### Description\nThe bash automation step executes user-provided commands using `execSync` without proper sanitization or validation. User input is processed through `processStringSync` which allows template interpolation, potentially allowing arbitrary command execution.\n\n#### Code Reference\n```21:28:packages/server/src/automations/steps/bash.ts\n    const command = processStringSync(inputs.code, context)\n\n    let stdout,\n      success = true\n    try {\n      stdout = execSync(command, {\n        timeout: environment.QUERY_THREAD_TIMEOUT,\n      }).toString()\n```\n\n#### Attack Vector\nAn attacker with access to create or modify automations can inject malicious shell commands by including template syntax that evaluates to command injection payloads (e.g., `$(rm -rf /)`, `; malicious-command`, `| malicious-command`).\n\n#### Impact\n- Remote code execution (RCE)\n- Complete system compromise\n- Data exfiltration\n- Lateral movement within the infrastructure\n\n#### Recommendation\n1. **Immediate**: Disable bash automation step in production until fixed\n2. Implement a whitelist of allowed commands\n3. Use parameterized command execution with proper escaping\n4. Implement command argument validation\n5. Consider using a restricted shell or command sandboxing\n6. Add rate limiting and monitoring for command execution\n\n#### Example Fix\n```typescript\nimport { spawn } from \"child_process\"\n\n// Validate against whitelist\nconst ALLOWED_COMMANDS = [\"echo\", \"date\", \"pwd\"] // Extend as needed\n\nfunction sanitizeCommand(input: string): string {\n  // Remove dangerous characters and command chaining\n  return input.replace(/[;&|`$(){}[\\]]/g, \"\").trim()\n}\n\nfunction validateCommand(cmd: string): boolean {\n  const parts = cmd.split(/\\s+/)\n  return ALLOWED_COMMANDS.includes(parts[0])\n}\n\nexport async function run({ inputs, context }) {\n  if (!inputs.code) {\n    return { stdout: \"Budibase bash automation failed: Invalid inputs\" }\n  }\n\n  const processedCommand = processStringSync(inputs.code, context)\n  const sanitized = sanitizeCommand(processedCommand)\n  \n  if (!validateCommand(sanitized)) {\n    return {\n      success: false,\n      stdout: \"Command not allowed\"\n    }\n  }\n\n  // Use spawn instead of execSync with proper argument handling\n  return new Promise((resolve) => {\n    const [command, ...args] = sanitized.split(/\\s+/)\n    const proc = spawn(command, args, {\n      timeout: environment.QUERY_THREAD_TIMEOUT,\n    })\n    \n    let stdout = \"\"\n    proc.stdout.on(\"data\", (data) => { stdout += data })\n    proc.on(\"close\", (code) => {\n      resolve({ stdout, success: code === 0 })\n    })\n  })\n}\n```",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "@budibase/server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.33.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Budibase/budibase/security/advisories/GHSA-gjw9-34gf-rp6m"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-25044"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Budibase/budibase"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Budibase/budibase/releases/tag/3.33.2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-78" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-04-03T21:53:32Z",
    "nvd_published_at" : "2026-04-03T16:16:35Z"
  }
}