CVE-2026-66611 describes an unauthenticated Cross Site Scripting (XSS) vulnerability in Paymob for WooCommerce versions <= 4.1.10. The vulnerability allows remote attackers to execute arbitrary scripts in the context of the affected application without requiring authentication. The CVSS 3.1 score is 7.1, indicating a high severity with network attack vector, low attack complexity, no privileges required, user interaction required, and scope changed. The impact includes limited confidentiality, integrity, and availability impacts. No patch or remediation information is currently provided, and no known exploits are reported in the wild.

The vulnerability can be exploited remotely without authentication, allowing attackers to execute arbitrary scripts in users' browsers. This can lead to limited disclosure of information, modification of data, and disruption of service. The scope of impact is changed, meaning the vulnerability affects resources beyond the initially vulnerable component.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider applying temporary mitigations such as input validation or output encoding if feasible. Monitor vendor channels for updates and apply patches promptly once released.