CVE-2026-81288: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in WP Swings Upsell Order Bump Offer for WooCommerce

This vulnerability (CVE-2026-81288) is an improper neutralization of input during web page generation (CWE-79) in the WP Swings Upsell Order Bump Offer for WooCommerce plugin. It allows unauthenticated attackers to perform Cross-Site Scripting (XSS) attacks on affected versions (<= 3.1.5). The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and impacts on confidentiality, integrity, and availability.

Successful exploitation can lead to execution of arbitrary scripts in the context of the affected web application, potentially resulting in data disclosure, modification, or denial of service. The vulnerability affects confidentiality, integrity, and availability of the system. However, no known exploits are reported in the wild at this time.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, consider applying web application firewall (WAF) rules to detect and block XSS attempts targeting this plugin. Monitor vendor channels for updates.