The Social Media Share Buttons & Social Sharing Icons WordPress plugin before 2.9.1 does not sanitize and escape some of its settings, which could allow high-privilege users such as admin to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in multisite setup)
Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting') vulnerability in Inisev Social Media & Share Icons allows Stored XSS.This issue affects Social Media & Share Icons: from n/a through 2.9.1.