WooCommerce is an open-source e-commerce platform built on WordPress. A vulnerability introduced in WooCommerce 8.8 allows for cross-site scripting. A bad actor can manipulate a link to include malicious HTML & JavaScript content. While the content is not saved to the database, the links may be sent to victims for malicious purposes. The injected JavaScript could hijack content & data stored in the browser, including the session. The URL content is read through the "Sourcebuster.js" library and then inserted without proper sanitization to the classic checkout and registration forms. Versions 8.8.5 and 8.9.3 contain a patch for the issue. As a workaround, one may disable the Order Attribution feature.