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.
History

Wed, 12 Aug 2026 13:00:00 +0000

Type Values Removed Values Added
Weaknesses CWE-502

Wed, 12 Aug 2026 06:15:00 +0000

Type Values Removed Values Added
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.
Title WooCommerce Subscriptions < 9.1.0 - Unauthenticated RCE via PHP Object Injection
References

cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-12T06:00:17.487Z

Reserved: 2026-07-30T14:11:55.443Z

Link: CVE-2026-18391

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-12T06:20:14.167

Modified: 2026-08-12T06:20:14.167

Link: CVE-2026-18391

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-12T12:45:02Z