addonsorg PDF Invoice for WooCommerce and Drag and Drop Template Builder Plugin Invoice Generation _getObjAttr deserialization

Summaryinfo

A vulnerability was found in addonsorg PDF Invoice for WooCommerce and Drag and Drop Template Builder Plugin up to 7.1.1. It has been rated as critical. Affected by this issue is the function _getObjAttr of the component Invoice Generation. The manipulation of the argument customer_note leads to deserialization. This vulnerability is referenced as CVE-2026-109220. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in addonsorg PDF Invoice for WooCommerce and Drag and Drop Template Builder Plugin up to 7.1.1 and classified as critical. This issue affects the function _getObjAttr of the component Invoice Generation. The manipulation of the argument customer_note with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-109220 since 10/12/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/31/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• addonsorg

Name

• PDF Invoice for WooCommerce and Drag and Drop Template Builder Plugin

Version

• 7.1.0
• 7.1.1

CPE 2.3info

• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒

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Threat Intelligenceinfo

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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