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.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.87%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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
- 9.6 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- EPSS
- 1.87% probability · 79th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- patreon/patreon wordpress
- Source
- contact@wpscan.com
EPSS 1.9% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin/Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/7a5fadb1-3f1c-4779-8ff6-356fccb5269bThird Party Advisory
- https://jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin/Exploit, Third Party Advisory
- https://wpscan.com/vulnerability/7a5fadb1-3f1c-4779-8ff6-356fccb5269bThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.