This vulnerability in the Paul Bearne Author Avatars List/Block plugin allows stored cross-site scripting due to improper input neutralization during web page generation. Attackers can inject malicious scripts that persist and execute when other users view the affected content. The issue affects all versions up to 2.1.23. The CVSS vector indicates network attack vector, low attack complexity, requiring privileges and user interaction, with partial impact on confidentiality, integrity, and availability.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of users viewing the affected pages, potentially leading to information disclosure, session hijacking, or other impacts on confidentiality, integrity, and availability. However, exploitation requires some privileges and user interaction, which limits the ease of attack. No known active exploits have been reported.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling or removing the affected plugin version to mitigate risk. Monitor vendor channels for updates or patches addressing this vulnerability.