CVE-2024-8628: 
WordPress vulnerability analysis and mitigation

The MailOptin plugin for WordPress (versions up to 1.2.70.3) contains a Stored Cross-Site Scripting vulnerability (CVE-2024-8628) in the plugin's 'post-meta' shortcode. The vulnerability was discovered and reported by Wordfence, with the disclosure date being September 23, 2024 (NVD).

The vulnerability stems from insufficient input sanitization and output escaping on user-supplied attributes in the 'post-meta' shortcode. The issue has been assigned a CVSS v3.1 base score of 5.4 (Medium) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N. The vulnerability is classified as CWE-79: Improper Neutralization of Input During Web Page Generation (Wordfence).

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

A patch has been released to address this vulnerability. Users should upgrade to version 1.2.70.4 or later of the MailOptin plugin to protect against this security issue (WordPress Plugin).