# CVE-2026-107750: CVE-2026-107750

Status: published. Published: 2026-10-31. Updated: 2026-11-01.

The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'billing_address.first_name / last_name / company, customer_note' parameter in all versions up to, and including, 5.16.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is an incomplete fix for CVE-2026-92244: the wp_kses() allow-list introduced in 5.16.2 correctly blocks raw-tag payloads but is bypassed by entity-encoded payloads (e.g., <img onerror=…>) that contain no literal angle-bracket characters and are therefore passed through unmodified before the trailing decode rematerializes them.

## Remediation

No remediation reported in collected sources

## Affected products and versions

Not reported in collected sources.

## Severity and prioritization

- CVSS 3.1: 7.2 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N; source: NVD: security@wordfence.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: exploitation none; automatable no; technical impact partial; source NVD SSVC: 134c704f-9b21-4f2e-91b3-4a467353bcc0

- Weaknesses: CWE-79

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.16.3/includes/Documents/BulkDocument.php#L143 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.16.3/includes/Documents/OrderDocument.php#L1699 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.16.3/includes/Documents/OrderDocumentMethods.php#L1217 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.16.3/includes/Documents/OrderDocumentMethods.php#L99 (security@wordfence.com)

- https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.16.3/wpo-ips-functions.php#L630 (security@wordfence.com)

- https://plugins.trac.wordpress.org/changeset/3756047/woocommerce-pdf-invoices-packing-slips/trunk/includes/Documents/OrderDocument.php (security@wordfence.com)

- https://www.wordfence.com/threat-intel/vulnerabilities/id/9456cd66-d608-49b8-ad4c-fdc89db4cd29?source=cve (security@wordfence.com)

## Provenance

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-107750; retrieved 2026-11-02; source updated 2026-11-01

Revision: 1fd68426d1d496ae2561ef43da68db53495eee9ad7439777b8fefba622990359

Canonical: https://y2.dev/cve/CVE-2026-107750