CVE-2025-3867: Ajax Comment Form CST <= 1.2 - Cross-Site Request Forgery to Stored Cross-Site Scripting
Description
The Ajax Comment Form CST plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.2. This is due to missing or incorrect nonce validation via the 'acform_cst_settings' page. This makes it possible for unauthenticated attackers to update settings and inject malicious web scripts via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.
Classification
CVE ID: CVE-2025-3867
CVSS Base Severity: MEDIUM
CVSS Base Score: 6.1
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Problem Types
CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')Affected Products
Vendor: rafe007
Product: Ajax Comment Form CST
Exploit Prediction Scoring System (EPSS)
EPSS Score: 0.03% (probability of being exploited)
EPSS Percentile: 6.98% (scored less or equal to compared to others)
EPSS Date: 2025-05-24 (when was this score calculated)
References
https://nvd.nist.gov/vuln/detail/CVE-2025-3867https://www.wordfence.com/threat-intel/vulnerabilities/id/2a001b31-042d-451b-ad9e-df8d41d3c2b0?source=cve
https://wordpress.org/plugins/ajax-comment-form-cst/