DHL for WooCommerce <= 4.0.0 - Unauthenticated Shipping Label Disclosure
Strategic Overview
- Status
- Patched in 4.0.1
- Affected Plugin
- DHL Shipping Germany for WooCommerce
- Affected Version
<= 4.0.0- CVSS
- 5.3Medium
- Weakness type
- CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
- CVE
CVE-2026-16993
At a glance
CVE-2026-16993 is a medium-severity Exposure of Sensitive Information to an Unauthorized Actor vulnerability in the DHL Shipping Germany for WooCommerce WordPress plugin, affecting versions <= 4.0.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.0.1; sites on affected versions should update now. Disclosed July 2026, reported by Artus KG.
Vulnerability Overview
The DHL for WooCommerce plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 4.0.0. This is due to shipping label files stored in a predictable, publicly accessible uploads subdirectory without an unguessable path component, combined with a fallback code path that returned the raw public label_url instead of routing through the protected download endpoint. This makes it possible for unauthenticated attackers to access shipping labels stored in the uploads directory by guessing their predictable public URLs, disclosing sensitive shipment information.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Reaching this weakness in DHL Shipping Germany for WooCommerce <= 4.0.0 takes no account at all. Sensitive information exposure means data the application intended to keep internal is returned to a caller who should not be able to see it.
The disclosed data — credentials, tokens, customer records or internal paths — is usually worth more as material for a follow-up attack than as an end in itself. For DHL Shipping Germany for WooCommerce the fix is 4.0.1: builds <= 4.0.0 are affected, anything from 4.0.1 onward is not.
Remediation
Update to version 4.0.1, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: DHL Shipping Germany for WooCommerce 4.0.1 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in DHL Shipping Germany for WooCommerce
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