The Eventbee RSVP Widget versions up to 1.0 contain a DOM-based cross-site scripting vulnerability caused by improper neutralization of input during web page generation. This allows an attacker with at least low privileges and user interaction to potentially execute malicious scripts in the context of the affected web application. The CVSS 3.1 base score is 6.5, reflecting network attack vector, low attack complexity, required privileges, user interaction, and impacts on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability could allow an attacker to execute arbitrary scripts in the victim's browser within the context of the vulnerable widget, potentially leading to limited disclosure of information, modification of data, or disruption of service. The impact is rated medium based on the CVSS score of 6.5 and the described confidentiality, integrity, and availability impacts.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. No official fix or patch links are provided at this time. Until a patch is available, users should consider limiting exposure to the vulnerable widget or applying any recommended workarounds from the vendor once available.