CVE-2021-24508

CVE-2021-24508 is an unauthenticated Stored Cross-Site Scripting (XSS) vulnerability affecting the Smash Balloon Social Post Feed WordPress plugin prior to version 2.19.2. An attacker can exploit this by injecting malicious script into the feedID POST parameter via an AJAX action, which is then executed in the context of a logged-in administrator. Rated Medium severity (CVSS 6.1), this vulnerability requires user interaction (UI:R) but can be exploited remotely (AV:N) with low attack complexity (AC:L), potentially leading to information disclosure and integrity compromise (C:L/I:L). There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.