CVE-2026-109220
Unauthenticated PHP object injection in PDF Invoice for WooCommerce ≤7.1.1
- CVSS 3.1
- 9.8 critical
- EPSS
- —
- Published
- ·
- Modified
The PDF Invoice for WooCommerce + Drag and Drop Template Builder plugin unsafely handles the checkout customer_note field. Unsanitized input is placed in invoice HTML, decoded, rebuilt by mPDF, and passed to unserialize() without validation. An unauthenticated attacker can trigger this on a default install by an anonymous Store API checkout (POST /wc/store/v1/checkout) using Direct Bank Transfer or cheque, which sets the order on-hold and generates the invoice, leading to code execution.
What to do: No fixed version is listed. Apply the plugin vendor’s update for CVE-2026-109220 when one is available.
| Product | Affected |
|---|---|
| PDF Invoice for WooCommerce + Drag and Drop Template Builder | all versions up to and including 7.1.1 |
Order-of-magnitude estimate by the model from install counts, market share and public scan data it knows; verify before quoting.
Description · NVD
The PDF Invoice for WooCommerce + Drag and Drop Template Builder plugin for WordPress is vulnerable to PHP Object Injection in all versions up to, and including, 7.1.1 via the 'customer_note' parameter parameter. This is due to insufficient sanitization of the customer_note checkout field, which is inlined verbatim into invoice HTML, entity-decoded back into a live tag by simplehtmldom, reassembled into raw bytes by mPDF, and passed to unserialize() in _getObjAttr without validation. This makes it possible for unauthenticated attackers to execute code on the server. An unauthenticated attacker can trigger the vulnerable code path on a default install by placing an anonymous WooCommerce checkout via the public Store API (POST /wc/store/v1/checkout) using a Direct Bank Transfer or cheque payment method, which automatically transitions the order to 'on-hold' status and fires the plugin's invoice-generation hook.
- Ecosystems
- WordPress, E-commerce
- Weakness
- CWE-502
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
In the news
0 storiesNo ingested article mentions this CVE yet.