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DHL for WooCommerce <= 4.0.0 — Insecure Direct Object Reference to Unauthenticated Shipping Label Download

CVE-2026-16981Published · Updated

Action summary

Affected: ≤4.0.0Update to 4.0.1 or newer

All remediation steps
Watch plugin
Severity
Medium5.3
CVSS
5.3
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:N Confidentiality
None
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-639 Authorization Bypass Through User-Controlled Key
Required access
No account needed
Exploit prediction (EPSS)
No score
CISA KEV
Not listed
On this page8

Am I affected?

DHL Shipping Germany for WooCommerce dhl-for-woocommerce

  1. Affected≤ 4.0.0
  2. Patched in4.0.1

Update to 4.0.1 or newer.

You are affected if you run ≤ 4.0.0. Version 4.0.1 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under DHL Shipping Germany for WooCommerce.
  • No admin access? Run a passive check of your site. It reads public files only.
  • No account is needed to exploit this. Treat any exposed site on an affected version as at risk.

What to do

  1. Update to version 4.0.1, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch DHL Shipping Germany for WooCommerce to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Pedro Pinho, Artus KG.

The DHL for WooCommerce plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 4.0.0. This is due to shipping label files stored at predictable, publicly accessible upload paths and old-style labels returning a direct public URL that bypassed the capability-checked download endpoint. This makes it possible for unauthenticated attackers to download arbitrary shipping labels belonging to any order without authentication by guessing predictable upload-folder paths or order IDs.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in DHL Shipping Germany for WooCommerce

All 2
More vulnerabilities in DHL Shipping Germany for WooCommerce
SeverityVulnerabilityCVEPublished
Medium5.3Unauthenticated Shipping Label Disclosure
≤4.0.0Update to 4.0.1
CVE-2026-16993

Timeline

  1. CVE published

    Severity medium, CVSS 5.3

  2. Record last updated

Sources & licenses

Wordfence record
Vulnerability data
Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
CVE® identifiers
[object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
CVSS / CWE
National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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