CVE-2025-11875: 
WordPress vulnerability analysis and mitigation

The SpendeOnline.org WordPress plugin contains a Stored Cross-Site Scripting vulnerability (CVE-2025-11875) affecting all versions up to and including 3.0.1. The vulnerability was discovered by researcher Gilang - DJ and was publicly disclosed on October 24, 2025 (Wordfence).

The vulnerability exists in the plugin's 'spendeonline' shortcode due to insufficient input sanitization and output escaping on user-supplied attributes. The issue has been assigned a CVSS v3.1 base score of 6.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79: Improper Neutralization of Input During Web Page Generation (NVD).

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, potentially leading to theft of sensitive information or manipulation of page content (NVD).

A fix was implemented in version 3.0.2 of the plugin, released on October 17, 2025, which includes proper escaping of the name attribute using escattr() function ([WordPress Plugin](https://plugins.trac.wordpress.org/changeset?sfpemail=&sfphmail=&reponame=&old=3380175%40spendeonline&new=3380175%40spendeonline&sfpemail=&sfph_mail=)).