The Prem Tiwari FM Notification Bar plugin versions up to 1.0.4 contain a stored cross-site scripting vulnerability due to improper input neutralization during web page generation. This allows attackers with high privileges to inject malicious scripts that are stored and later executed in the context of users who view the affected notification bar. The vulnerability has a CVSS 3.1 base score of 5.9, reflecting network attack vector, low attack complexity, required privileges, and user interaction. No patch or official remediation is currently documented, and no exploits are known in the wild.

Successful exploitation of this stored XSS vulnerability could allow an attacker with high privileges to execute arbitrary scripts in the browsers of users who view the notification bar, potentially leading to limited confidentiality, integrity, and availability impacts. However, exploitation requires user interaction and elevated privileges, which reduces the overall risk. No known active exploitation has been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, limit exposure by restricting high-privilege user access and carefully validating and sanitizing inputs if possible. Monitor vendor channels for updates or patches addressing this vulnerability.