CVE-2026-89289
Deferred Deferred - Pending Action

BaseFortify

Publication date: 2026-10-06

Last updated on: 2026-10-06

Assigner: WPScan

Description
The Fast Courier WordPress plugin through 5.2.3 does not restrict an unauthenticated REST route that writes order fulfillment data, allowing unauthenticated attackers to overwrite the courier status and customer-facing tracking details of any WooCommerce order by supplying its id.

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Meta Information

Published
2026-10-06
Last Modified
2026-10-06
Generated
2026-10-19
AI Q&A
2026-10-06
EPSS Evaluated
2026-10-18
NVD
CVE-2026-89289
EUVD
EUVD-2026-92967

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
Unknown Fast Courier 0

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

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Executive Summary

This vulnerability affects the Fast Courier WordPress plugin versions 5.2.3 and earlier. It allows unauthenticated attackers to modify the courier status and tracking details of any WooCommerce order by exploiting a missing authorization check in the plugin's REST endpoint called 'order-status-update'.

Detection Guidance

Check for unauthorized modifications to WooCommerce order statuses or tracking details. Monitor REST API logs for requests to the 'order-status-update' route without authentication. Inspect plugin versions to confirm if Fast Courier 5.2.3 or earlier is installed.

Impact Analysis

Attackers could change order statuses and tracking information without authentication, potentially misleading customers about their order status or causing confusion in order fulfillment processes.

Compliance Impact

This vulnerability could potentially impact compliance with GDPR and HIPAA by allowing unauthorized modification of order tracking details. Unauthenticated attackers can alter courier status and customer-facing tracking information, which may lead to unauthorized access or disclosure of personal data. This could violate GDPR's data integrity and confidentiality principles or HIPAA's requirements for protecting health-related order data.

Mitigation Strategies

Disable the Fast Courier plugin immediately if installed. Monitor WooCommerce orders for unauthorized changes. Check for updates from the plugin developer or consider removing the plugin until a patch is released.

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