CVE-2026-9858
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
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.
INFO
Published Date :
Sept. 19, 2026, 9:16 a.m.
Last Modified :
Sept. 19, 2026, 9:16 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Affected Products
The following products are affected by CVE-2026-9858
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update the plugin to the latest version.
- Verify AJAX handlers have proper authorization checks.
- Ensure nonce verification is implemented.
- Validate order ownership before processing requests.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-9858.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-9858 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-9858
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-9858 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-9858 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Sep. 19, 2026
Action Type Old Value New Value Added 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. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Added CWE CWE-862 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/9xxx/CVE-2026-9858.json">CVE-2026-9858</a> Added Reference https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L228 Added Reference https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L263 Added Reference https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L291 Added Reference https://plugins.trac.wordpress.org/browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L60 Added Reference https://plugins.trac.wordpress.org/changeset?reponame=&old=3561104%40wc-partial-shipment&new=3561104%40wc-partial-shipment Added Reference https://www.wordfence.com/threat-intel/vulnerabilities/id/d9278c56-b963-4d9b-ae5a-45dab44c701f?source=cve