VULNERABILITY INTELLIGENCE
CVE-2026-18391
CVSS score9.8 CRITICAL
EPSS probability0.96%
CISA KEVNot currently listed
Published2026-08-12
Last modified2026-08-26
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-434