CVE-2025-48308: 
WordPress vulnerability analysis and mitigation

CVE-2025-48308 is a Cross-Site Request Forgery (CSRF) vulnerability discovered in the Newsletter subscription optin module WordPress plugin that allows Stored Cross-Site Scripting (XSS). The vulnerability affects versions through 1.2.9 of the plugin and was discovered by Nguyen Xuan Chien. The issue was initially reported on August 12, 2025, and was publicly disclosed on August 25, 2025 (Patchstack).

The vulnerability has been assigned a CVSS v3.1 base score of 7.1 (High), with the following vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L. The attack vector is Network-based, requires Low attack complexity, needs No privileges, but does require User interaction. The scope is Changed, with Low impact on Confidentiality, Integrity, and Availability (Patchstack).

The vulnerability could allow a malicious actor to force higher privileged users to execute unwanted actions under their current authentication. The combination of CSRF and Stored XSS could lead to compromised user sessions, unauthorized actions, and potential data exposure (Patchstack).

As there is no official fix available and the software appears to be abandoned (last updated over a year ago), the recommended mitigation is to remove and replace the plugin with an alternative solution. The software is unlikely to receive further updates or security fixes (Patchstack).