CVE-2025-7653: 
WordPress vulnerability analysis and mitigation

The EPay.bg Payments plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2025-7653) in all versions up to and including 0.1. The vulnerability exists in the plugin's 'epay' shortcode due to insufficient input sanitization and output escaping on user-supplied attributes (NVD CVE).

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation) with a CVSS v3.1 Base Score of 6.4 (MEDIUM). The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring low privileges (PR:L) and no user interaction (UI:N). The scope is changed (S:C) with low confidentiality (C:L) and integrity (I:L) impacts, and no availability impact (A:N) (NVD CVE).

When exploited, this vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses the compromised page (NVD CVE).

Users should upgrade to a version newer than 0.1 when available. In the meantime, it is recommended to restrict access to the plugin's shortcode functionality to trusted users only and implement additional input validation at the application level (NVD CVE).