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CVE-2026-49056 – Unauthenticated Sensitive Data Exposure – WebToffee WooCommerce PDF Invoices, Pa…

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Summary

CVE-2026-49056 is a high-severity unauthenticated sensitive data exposure vulnerability (CWE-497) in the WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels WordPress plugin, affecting all versions up to and including 4.9.4. The flaw allows any unauthenticated remote attacker to access customer-facing PDF documents — invoices, packing slips, delivery notes, and shipping labels — which contain personally identifiable information (PII). With over 50,000 active installations, the potential for large-scale customer data exposure across WooCommerce stores is significant.

Technical details

  • Root cause: The plugin fails to properly enforce authentication checks and authorization validation on the endpoints responsible for generating and retrieving PDF order documents, allowing access without verifying the identity or permissions of the requester.
  • Trigger conditions: No authentication, no user interaction, and no special configuration is required to exploit this vulnerability. The attack vector is the network (HTTP/HTTPS).
  • Attack vector: An unauthenticated remote attacker can directly request plugin endpoints to retrieve PDF order documents. Order IDs can be enumerated to access documents across multiple customer orders.
  • Impact: Successful exploitation exposes customer PII contained in the order documents, including: customer names, billing and shipping addresses, telephone numbers, email addresses, order contents and product details, and pricing and order totals. This results in a High confidentiality impact with no integrity or availability impact.

Affected software

  • WebToffee WooCommerce PDF Invoices, Packing Slips, Delivery Notes and Shipping Labels – all versions ≤ 4.9.4

Severity

  • CVSS v3.1 Base Score: 7.5 (HIGH)
  • Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Mitigation and recommended actions

  • Immediate action – patch: Update the plugin to version 4.9.5 or later. The vulnerability is fully remediated in version 4.9.5. The current available version as of this writing is 4.9.6.
  • If immediate patching is not possible, consider temporarily restricting public HTTP access to the WordPress plugin’s document-serving endpoints at the web server or WAF level until the update can be applied.

IONIX Status

The IONIX research team is tracking ongoing exploitation attempts and recommends immediate patching. Potentially affected assets are outlined in this post.

References

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