The Advanced Custom Fields Pro WordPress plugin before 5.9.1 did not properly escape the generated update URL when outputting it in an attribute, leading to a reflected Cross-Site Scripting issue in the update settings page.CreditsJuan David Ordoñez NoriegaReferenceshttps://wpscan.com/vulnerability/d1e9c995-37bd-4952-b88e-945e02e3c83fhttps://github.com/jdordonezn/Reflected-XSS-in-WordPress-for-ACF-PRO-before-5.9.1-plugin/issues/1https://www.advancedcustomfields.com/blog/acf-5-9-1-release/
