The SherkSpear Add Ribbon Shortcode plugin versions up to 1.0.1 contain a DOM-based cross-site scripting vulnerability due to improper input neutralization during web page generation. This vulnerability allows an attacker with low privileges to inject malicious scripts that execute in the victim's browser, potentially leading to limited confidentiality, integrity, and availability impacts. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, required privileges, user interaction, and partial impact on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the context of the affected web application, potentially leading to information disclosure, modification of data, or disruption of service. The impact is limited by the requirement for user interaction and the attacker needing low privileges.

No official patch or remediation guidance is currently available from the vendor. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should consider limiting exposure by restricting access to the vulnerable plugin or disabling it if feasible.