The vulnerability CVE-2026-28100 affects LambertGroup's UberSlider PerpetuumMobile plugin (versions up to 2.3) and is classified as a reflected cross-site scripting (XSS) issue. It occurs due to improper neutralization of user input during web page generation, enabling attackers to inject and execute arbitrary scripts in the victim's browser. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, scope changed, and low impacts on confidentiality, integrity, and availability.

Successful exploitation of this vulnerability can allow an attacker to execute arbitrary scripts in the context of the victim's browser session, potentially leading to information disclosure, session hijacking, or other malicious actions affecting confidentiality, integrity, and availability to a limited extent. However, no known exploits have been reported in the wild.

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 restricting access to the affected plugin to mitigate risk. Monitor vendor communications for updates regarding patches or official mitigations.