The vulnerability CVE-2025-31575 affects the Flag Icons plugin by Vasilis Triantafyllou, specifically versions up to 2.2. It is a stored cross-site scripting (XSS) issue caused by improper neutralization of script-related HTML tags in web pages. The CVSS 3.1 base score is 5.9 (medium severity), with an attack vector of network, low attack complexity, requiring high privileges and user interaction, and impacts on confidentiality, integrity, and availability. The vulnerability is publicly disclosed but lacks vendor-provided patch or mitigation details.

Successful exploitation of this stored XSS vulnerability could allow an attacker with high privileges to inject malicious scripts that execute in the context of other users, potentially leading to partial compromise of confidentiality, integrity, and availability of the affected system or data. However, exploitation requires user interaction and high privileges, which limits the attack scope.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict access to the affected plugin to trusted users only and consider disabling or removing the plugin if feasible. Monitor vendor channels for updates or patches addressing this vulnerability.