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Vulnerability record · CVE-2021-24228 · published 12 April 2021

CVE-2021-24228: Patreon wordpress cross-site scripting vulnerability

Patreon · Patreon Wordpress

The Jetpack Scan team identified a Reflected Cross-Site Scripting in the Login Form of the Patreon WordPress plugin before 1.7.2. The WordPress login form (wp-login.php) is hooked by the plugin and offers to allow users to authenticate on the site using their Patreon account. Unfortunately, some of the error logging logic behind the scene allowed user-controlled input to be reflected on the login page, unsanitized.

9.6 CVSS 3.1 Critical EPSS 1.9% · top 21.5% CWE-79 · Cross-site scripting
9.6CVSS 3.1 base score, v2 6.8
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
4References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The Jetpack Scan team identified a Reflected Cross-Site Scripting in the Login Form of the Patreon WordPress plugin before 1.7.2. The WordPress login form (wp-login.php) is hooked by the plugin and offers to allow users to authenticate on the site using their Patreon account. Unfortunately, some of the error logging logic behind the scene allowed user-controlled input to be reflected on the login page, unsanitized.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin/ ExploitThird Party Advisory
https://wpscan.com/vulnerability/7a5fadb1-3f1c-4779-8ff6-356fccb5269b Third Party Advisory
https://jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin/ ExploitThird Party Advisory
https://wpscan.com/vulnerability/7a5fadb1-3f1c-4779-8ff6-356fccb5269b Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2018-20984Patreon wordpress deserialization of untrusted data vulnerabilityThe patreon-connect plugin before 1.2.2 for WordPress has Object Injection.EPSS 2.0%9.6CVE-2021-24229Patreon wordpress cross-site scripting vulnerabilityThe Jetpack Scan team identified a Reflected Cross-Site Scripting via the patreon_save_attachment_patreon_level AJAX action of the Patreon WordPress …EPSS 1.8%8.8CVE-2023-41129Patreon wordpress cross-site request forgery vulnerabilityCross-Site Request Forgery (CSRF) vulnerability in Patreon Patreon WordPress.This issue affects Patreon WordPress: from n/a through 1.8.6.EPSS 0.29%8.1CVE-2021-24230Patreon wordpress cross-site request forgery vulnerabilityThe Jetpack Scan team identified a Cross-Site Request Forgery vulnerability in the Patreon WordPress plugin before 1.7.0, allowing attackers to make …EPSS 0.60%7.5CVE-2021-24227Patreon wordpress information exposure vulnerabilityThe Jetpack Scan team identified a Local File Disclosure vulnerability in the Patreon WordPress plugin before 1.7.0 that could be abused by anyone vi…EPSS 5.9%6.5CVE-2021-24231Patreon wordpress cross-site request forgery vulnerabilityThe Jetpack Scan team identified a Cross-Site Request Forgery vulnerability in the Patreon WordPress plugin before 1.7.0, allowing attackers to make …EPSS 0.58%5.5CVE-2021-25026Patreon wordpress cross-site scripting vulnerabilityThe Patreon WordPress plugin before 1.8.2 does not sanitise and escape the field "Custom Patreon Page name", which could allow high privilege users t…EPSS 0.70%6.1CVE-2026-42897Microsoft Exchange Server XSS enables spoofingMicrosoft Exchange Server and Exchange Server Subscription Edition fail to neutralize input during web page generation, a cross-site scripting flaw (…KEVEPSS 0.52%analysed

Source: NIST National Vulnerability Database (record CVE-2021-24228), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.