This vulnerability, identified as CWE-79, involves improper sanitization or encoding of user-supplied input in the Custom Login and Registration plugin by AlphaEfficiencyTeam. It allows stored cross-site scripting attacks, where malicious scripts can be injected and later executed in the context of other users' browsers. The CVSS vector indicates the attack requires network access, low attack complexity, low privileges, and user interaction, with a scope change and partial impact on confidentiality, integrity, and availability. The affected product versions include all up to 1.0.0. No patch or official fix has been documented yet.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of affected users, potentially leading to session hijacking, data theft, or other malicious actions impacting confidentiality, integrity, and availability. The vulnerability requires the attacker to have low privileges and for a user to interact with the malicious content. There are no reports of active exploitation in the wild.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider applying any available temporary mitigations such as input validation or output encoding at the application level. Monitor vendor communications for updates on patches or official mitigations.