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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.019 (78.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Patreon WordPress
- Patreon WordPress — versions 1.7.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- jetpack.com/2021/03/26/vulnerabilities-found-in-patreon-wordpress-plugin/ (Exploit, Third Party Advisory)
- wpscan.com/vulnerability/7a5fadb1-3f1c-4779-8ff6-356fccb5269b (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.