CVE-2025-7966: 
WordPress vulnerability analysis and mitigation

The Get Youtube Subs plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2025-7966) discovered on July 23, 2025. The vulnerability affects all versions up to and including 3.5, impacting the plugin's handling of 'channel', 'layout', and 'subs_count' parameters. The plugin has been temporarily closed since July 22, 2025, pending a full security review (NVD CVE, WordPress Plugin).

The vulnerability is classified as a Stored Cross-Site Scripting (CWE-79) issue, stemming from insufficient input sanitization and output escaping in the plugin's functionality. The CVSS v3.1 base score is 6.4 (Medium), with a vector string of CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N. The vulnerability specifically involves the subscribelinkatt function, which fails to properly sanitize user input (NVD CVE).

The 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 data theft, session hijacking, or other client-side attacks (NVD CVE).

The WordPress plugin repository has temporarily closed the plugin as of July 22, 2025, pending a full security review. Users are advised to disable and remove the plugin until a patched version becomes available (WordPress Plugin).