This vulnerability in Simple JWT Login (<= 3.6.4) is due to improper sanitization of user input during web page generation, leading to stored cross-site scripting (XSS). An attacker with low privileges can inject malicious scripts that execute when other users view the affected pages, potentially impacting confidentiality, integrity, and availability. The CVSS 3.1 vector indicates network attack vector, low attack complexity, requiring privileges and user interaction, with partial impact on confidentiality, integrity, and availability.

Successful exploitation can lead to execution of arbitrary scripts in the context of affected users, potentially allowing theft of sensitive information, session hijacking, or disruption of service. The impact is rated medium due to the requirement of privileges and user interaction, and partial impact on confidentiality, integrity, and availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, restrict user privileges to trusted users only and avoid enabling features that allow untrusted input to be stored and rendered. Monitor vendor channels for updates and apply patches promptly once released.