Partial Shipment for Woocommerce <= 3.4 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Settings Modification via wxp_order_shipment, wxp_order_item_shipment, and wxp_order_set_shipped AJAX Actions

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-9858
StatePUBLISHED
AssignerWordfence
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-09-19 09:16:35 UTC
Updated2026-09-20 01:16:38 UTC
DescriptionThe 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.

Risk And Classification

Primary CVSS: v3.1 4.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS: 0.002150000 probability, percentile 0.122470000 (date 2026-09-19)

Problem Types: CWE-862 | CWE-862 CWE-862 Missing Authorization

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
3.1CNADECLARED4.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Wpexpertshub Partial Shipment For WooCommerce affected 3.4 semver Not specified

References

ReferenceSourceLinkTags
plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-ship... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-ship... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-ship... [email protected] plugins.trac.wordpress.org
www.wordfence.com/threat-intel/vulnerabilities/id/d9278c56-b963-4d9b-ae5a-45dab... [email protected] www.wordfence.com
plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-ship... [email protected] plugins.trac.wordpress.org
plugins.trac.wordpress.org/changeset [email protected] plugins.trac.wordpress.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Muhan Luo (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-09-18T19:59:23.000ZDisclosed

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