CVE-2026-18027

The WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes & Shipping Labels plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 4.9.8 via the get_image_src_in_base64 function. This makes it possible for authenticated attackers, with subscriber-level access and above, to read the contents of arbitrary files on the server, which can contain sensitive information. The base64-encoded file contents are embedded into the cached invoice HTML and served directly to the attacker via the plugin's own Print/Download invoice endpoints, which require only a valid nonce and access key.

• CWE-22

• https://plugins.trac.wordpress.org/browser/print-invoices-packing-slip-labels-for-woocommerce/tags/4.9.8/admin/modules/customizer/classes/class-customizer.php#L1453
• https://plugins.trac.wordpress.org/browser/print-invoices-packing-slip-labels-for-woocommerce/tags/4.9.8/admin/modules/customizer/customizer.php#L1561
• https://plugins.trac.wordpress.org/browser/print-invoices-packing-slip-labels-for-woocommerce/tags/4.9.8/admin/modules/customizer/customizer.php#L1607
• https://plugins.trac.wordpress.org/browser/print-invoices-packing-slip-labels-for-woocommerce/tags/4.9.8/public/modules/invoice/invoice.php#L1934
• https://plugins.trac.wordpress.org/changeset/3646629/print-invoices-packing-slip-labels-for-woocommerce
• https://www.wordfence.com/threat-intel/vulnerabilities/id/a46f270f-d9cb-4bc1-8e10-3fc6646e1d78?source=cve

Published

Aug 23, 2026

Last Modified

Aug 24, 2026

Status

Deferred

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-1802A security flaw has been discovered in Ziroom ZHOME A0101 1.…7.3
• CVE-2026-18020IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker t…5.3
• CVE-2026-18021The The Beaver Builder Page Builder – Drag and Drop Website …6.5
• CVE-2026-18022Integer wraparound in IVFFlat index build in pgvector before…8.8
• CVE-2026-18023Sensitive Information in Resource Not Removed Before Reuse i…5.7
• CVE-2026-18024Buffer over-read in PostgreSQL ascii() SQL function allows a…4.3
• CVE-2026-18028The "quick setup" view presented to users after they first c…2.3
• CVE-2026-18029Our payment integration with GiroCheckout did not properly v…6.3
• CVE-2026-1803A weakness has been identified in Ziroom ZHOME A0101 1.0.1.0…8.2
• CVE-2026-18030The BricksForge WordPress plugin before 3.1.8.8 does not ver…8.1
• CVE-2026-18031The TabaPay Gateway WordPress plugin through 1.4.0 does not …9.8
• CVE-2026-18032The WP Data Access WordPress plugin before 5.5.79 does not …7.5