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 (CWE-79) in the Upsell Order Bump Offer for WooCommerce plugin allows unauthenticated attackers to perform Cross-Site Scripting (XSS) attacks by improper neutralization of input during web page generation. The affected versions are up to 3.1.5 inclusive. The CVSS 3.1 base score is 7.1, indicating high severity, with 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 victim's browser, potentially resulting in data theft, session hijacking, or other malicious actions impacting confidentiality, integrity, and availability of the affected system or user data.

No patch or official fix information is currently available. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should consider disabling or removing the affected plugin version or applying any vendor-provided temporary mitigations if available.