Patreon WordPress <= 1.7.0 - Reflected Cross-Site Scripting

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE CVE-2021-24229
CVSS 9.6 (Critical)
Publicly Published March 26, 2021
Last Updated January 22, 2024
Researchers George Stephanis
Fioravante Souza
Miguel Neto
Benedict Singer
Marc-Alexandre Montpas


The Jetpack Scan team identified a Reflected Cross-Site Scripting via the patreon_save_attachment_patreon_level AJAX action of the Patreon WordPress plugin before 1.7.2. This AJAX hook is used to update the pledge level required by Patreon subscribers to access a given attachment. This action is accessible for user accounts with the ‘manage_options’ privilege (i.e.., only administrators). Unfortunately, one of the parameters used in this AJAX endpoint is not sanitized before being printed back to the user, so the risk it represents is the same as the previous XSS vulnerability.



1 affected software package

Software Type Plugin
Software Slug patreon-connect (view on
Patched? Yes
Remediation Update to version 1.7.2, or a newer patched version
Affected Version
  • < 1.7.2
Patched Version
  • 1.7.2

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