CSRF in Easy Registration Forms
CVE-2021-39353
The Easy Registration Forms WordPress plugin is vulnerable to Cross-Site Request Forgery due to missing nonce validation via the ajax_add_form function found in the ~/includes/class-form.php file which made it possible for attackers to inject arbitrary web scripts in versions up to, and including 2.1.1.
Vulnerability class: CSRF (Cross-Site Request Forgery)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.007 (52.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000
Affected products
- Easy Registration Forms — versions 2.1.1
- Easyregistrationforms Easy Registration Forms
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.wordfence.com/vulnerability-advisories/ (Third Party Advisory)
- plugins.trac.wordpress.org/browser/easy-registration-forms/tags/2.1.1/includes/… (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-39353?
- CVE-2021-39353 is a high-severity vulnerability in Easy Registration Forms, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2021-11-19.
- How severe is CVE-2021-39353?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2021-39353 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.