CVE-2026-13116 (CVSS 4.3)

Description

The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.14.0 via the generate_document_shortcode due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to mint publicly accessible, session-free download links for arbitrary third-party orders, exposing customer names, billing and shipping addresses, email addresses, phone numbers, order and invoice numbers, line items, totals, payment details, and customer notes contained in those orders' invoices and packing slips. Exploitation requires the plugin's Document link access type setting to be configured to 'full'; with the default 'logged_in' value, generated URLs are signed with a per-session nonce rather than the order_key, making the shortcode path unexploitable for unauthorized access to third-party orders.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

References

Other References

https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.14.0/includes/Endpoint.php#L111 https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.14.0/includes/Frontend.php#L271 https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.14.0/includes/Frontend.php#L284 https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.9.2/includes/Endpoint.php#L111 https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.9.2/includes/Frontend.php#L271 https://plugins.trac.wordpress.org/browser/woocommerce-pdf-invoices-packing-slips/tags/5.9.2/includes/Frontend.php#L284 https://plugins.trac.wordpress.org/changeset?reponame=&old=3590578%40woocommerce-pdf-invoices-packing-slips&new=3590578%40woocommerce-pdf-invoices-packing-slips https://www.wordfence.com/threat-intel/vulnerabilities/id/6525195e-5d90-4dd4-b9ee-612a8295c262?source=cve

Frequently Asked Questions

What is CVE-2026-13116? +

The PDF Invoices & Packing Slips for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to, and including, 5.14.0 via the generate_document_shortcode due to missing validation on a user controlled key. This makes it possible for authenticated attackers, with contributor-level access and above, to mint publicly accessible, session-free download links for arbitrary third-party orders, exposing customer names, billing and shipping addresses, email addresses, phone numbers, order and invoice numbers, line items, totals, payment details, and customer notes contained in those orders' invoices and packing slips. Exploitation requires the plugin's Document link access type setting to be configured to 'full'; with the default 'logged_in' value, generated URLs are signed with a per-session nonce rather than the order_key, making the shortcode path unexploitable for unauthorized access to third-party orders. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-13116? +

CVE-2026-13116 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-13116? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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