What is CVE-2021-24228?

CVE-2021-24228 is a critical-severity vulnerability in Patreon WordPress, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-04-12.

How severe is CVE-2021-24228?

Critical severity. CVSS v3 base score is 9.6 out of 10.

Is CVE-2021-24228 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Patreon WordPress

CVE-2021-24228

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.019 (77.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.6 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H.

Affected products

Patreon Patreon_wordpress
Unknown Patreon Wordpress — versions 1.7.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

contact@wpscan.com (Exploit, Third Party Advisory, x_refsource_MISC)
contact@wpscan.com (x_refsource_CONFIRM, Third Party Advisory)

Frequently asked questions

What is CVE-2021-24228?: CVE-2021-24228 is a critical-severity vulnerability in Patreon WordPress, classified under Cross-site Scripting. CVSS score: 9.6/10. Published 2021-04-12.
How severe is CVE-2021-24228?: Critical severity. CVSS v3 base score is 9.6 out of 10.
Is CVE-2021-24228 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.