CVE-2026-18391
Received
Received - Intake
PHP Object Injection in WooCommerce Subscriptions
Vulnerability report for CVE-2026-18391, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-08-12
Last updated on: 2026-08-12
Assigner: WPScan
Description
Description
The WooCommerce Subscriptions WordPress plugin before 9.1.0 does not validate user input before unserializing it on stores with High-Performance Order Storage enabled, leading to a PHP Object Injection issue which unauthenticated users can escalate to Remote Code Execution via a gadget chain present in the bundled dependencies.
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| woocommerce | subscriptions | to 9.1.0 (exc) |
| woocommerce | subscriptions | to 7.9.1 (exc) |
| woocommerce | subscriptions | to 8.8.2 (exc) |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-UNKNOWN |
