The Klaviyo WordPress plugin before 3.0.10 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).
4.8CVSS
4.9AI Score
0.001EPSS
Auth. (admin+) Stored Cross-Site Scripting (XSS) vulnerability in Klaviyo, Inc. Klaviyo plugin <= 3.0.7 versions.
5.9CVSS
4.9AI Score
0.001EPSS