CVE-2026-9858 json
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
published 2026-09-19 50 d ago modified 2026-09-21 48 d ago also EUVD-2026-83570
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 29%
- public exploits
- 0
- none known
Summary
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.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 50 d ago
Exploit prediction
0.35% chance of exploitation in the next 30 days, higher than 29% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Affected products
- wpexpertshub Partial Shipment for WooCommerce
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
- wordfence.com /threat-intel/vulnerabilities/id/d9278c56-b963-4d9b-ae5a-45dab44c701f?source=cve
- plugins.trac.wordpress.org /browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L291
- plugins.trac.wordpress.org /browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L228
- plugins.trac.wordpress.org /browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L263
- plugins.trac.wordpress.org /browser/wc-partial-shipment/tags/3.4/woocommerce-partial-shipment.php#L60
- plugins.trac.wordpress.org /changeset?reponame=&old=3561104%40wc-partial-shipment&new=3561104%40wc-partial-shipment
Sources
- CVE List CVE-2026-9858
- NVD CVE-2026-9858
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.