This vulnerability (CVE-2026-56041) is an instance of CWE-79, where the Responsive Lightbox plugin by dFactory fails to properly sanitize user input before including it in web pages. The flaw allows unauthenticated attackers to inject malicious scripts, resulting in Cross-Site Scripting (XSS). The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability. The affected versions include all versions up to and including 2.7.6. No official patch or remediation guidance is currently provided by the vendor, and no known exploits are reported in the wild.

Successful exploitation of this vulnerability can allow attackers to execute arbitrary scripts in the context of the affected website, potentially leading to theft of sensitive information, session hijacking, or disruption of service. The CVSS vector indicates partial impact on confidentiality, integrity, and availability. Because the vulnerability is exploitable without authentication, it poses a significant risk to users of the affected plugin versions.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, users should consider disabling the Responsive Lightbox plugin or restricting access to trusted users only. Monitor vendor channels for updates and apply patches promptly once available.