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Bollettino del 31 ottobre 2026

CVE-2026-109220: PDF Invoice for WooCommerce + Drag and Drop Template Builder (addonsorg)

Vulnerabilità critica, punteggio 9,8 su 10, in PDF Invoice for WooCommerce + Drag and Drop Template Builder (addonsorg). Sfruttabile da remoto, via rete, senza credenziali, senza che nessuno faccia nulla. Tipo: deserializzazione di dati non attendibili.

Gravità
9,8 su 10 (critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Tipo di difetto
CWE-502: deserializzazione di dati non attendibili
Pubblicata
31 ottobre 2026

Descrizione originale

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.

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