CVE-2025-11883: 
WordPress vulnerability analysis and mitigation

The Responsive Progress Bar plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2025-11883) discovered in versions 1.0 and earlier. The vulnerability was disclosed on October 21, 2025, and affects the plugin's rprogress shortcode functionality. The plugin has been temporarily closed since October 17, 2025, pending a full security review (Wordfence, WordPress Plugin).

The vulnerability stems from insufficient input sanitization and output escaping on user-supplied attributes in the rprogress shortcode. 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) (Wordfence).

The vulnerability allows authenticated attackers with contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever any user accesses the compromised page, potentially leading to unauthorized data access or manipulation of user sessions (Wordfence).

The plugin has been temporarily closed and is not available for download since October 17, 2025, pending a full security review. Users are advised to disable and remove the plugin until a patched version becomes available (WordPress Plugin).