CVE-2024-9873: 
WordPress vulnerability analysis and mitigation

The Community by PeepSo – Social Network, Membership, Registration, User Profiles, Premium – Mobile App plugin for WordPress is vulnerable to Stored Cross-Site Scripting (XSS) via URLs in posts, comments, and profiles when Markdown support is enabled in versions up to and including 6.4.6.1. The vulnerability was discovered and disclosed on October 16, 2024 (NVD).

The vulnerability stems from insufficient input sanitization and output escaping when Markdown support is enabled. This security flaw has been assigned a CVSS v3.1 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 (NVD).

When exploited, this vulnerability allows authenticated attackers with Subscriber-level access and above to inject arbitrary web scripts into pages. These malicious scripts will execute whenever a user accesses an injected page, potentially leading to data theft, session hijacking, or other client-side attacks (NVD).

The vulnerability has been patched in version 6.4.6.2 of the plugin. Users are advised to update to this version or later to protect against this security issue. The fix includes improved input sanitization and output escaping mechanisms (WordPress Plugin).