The vulnerability CVE-2026-25373 affects ProgressionStudios Vayvo (versions before 6.8) and is classified as a reflected Cross-site Scripting (XSS) issue. It results from improper neutralization of input during web page generation, enabling attackers to inject malicious scripts that execute when a user interacts with crafted web content. The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L) indicates that the attack can be performed remotely over the network with low complexity, requires no privileges but user interaction, and can affect confidentiality, integrity, and availability with a scope change. No patch or official remediation information is currently available.

Successful exploitation of this reflected XSS vulnerability can lead to partial compromise of user confidentiality, integrity, and availability within the affected application context. Attackers could execute arbitrary scripts in the victim's browser, potentially leading to session hijacking, data theft, or other malicious actions. However, no known exploits in the wild have been reported to date.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should exercise caution with untrusted input and consider implementing web application firewall (WAF) rules to detect and block reflected XSS attempts. Monitor vendor channels for updates regarding patches or official mitigations.