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CVE-2026-9858

MEDIUM 4.3 CVSS 3.1
Published
September 19, 2026
Last modified
September 21, 2026
NVD status
Deferred
Reported by
security@wordfence.com
Weakness
CWE-862
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Description

The Partial Shipment for Woocommerce plugin for WordPress is vulnerable to Missing Authorization in versions up to, and including, 3.4 via the wxp_order_shipment, wxp_order_item_shipment, and wxp_order_set_shipped AJAX actions. This is due to the AJAX handlers in woocommerce-partial-shipment.php (registered at lines 60–62 and implemented at lines 228, 263, and 291) lacking both capability checks and nonce verification, and not validating the calling user's ownership of the supplied order_id. This makes it possible for authenticated attackers, with Subscriber-level access and above, to read arbitrary order item details (names, quantities, shipped counts) belonging to any customer and to modify the shipment status / shipped quantities of any order, which can also trigger order status transitions via the wxp_order_status action.

Affected WordPress components

A confirmed match is backed by the plugin or theme slug. A possible match is based on the product name only and should be verified.

Affected products and versions

  • wpexpertshub Partial Shipment for WooCommerce — Up to and including 3.4

References

  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L228
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L263
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L291
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L60
  • plugins.trac.wordpress.org https://plugins.trac.wordpress.org/changeset?reponame=&old=3561104%40wc-partial-shipment&new=3561104%40wc-partial-shipment
  • www.wordfence.com https://www.wordfence.com/threat-intel/vulnerabilities/id/d9278c56-b963-4d9b-ae5a-45dab44c701f?source=cve
  • nvd.nist.gov Official NVD record