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CVE PROGRAM SOURCE RECORD9.8 Critical

CVE-2026-18391

WooCommerce Subscriptions < 9.1.0 - Unauthenticated RCE via PHP Object Injection

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Unknown WooCommerce Subscriptions

Default version status: unaffected

  • 4.7.0 to < 9.1.0affected

References