This vulnerability involves stored XSS in the /admin/config-module.php file of the creatorsofcode simplephp project, identified in a specific GitHub commit as of February 27, 2026. An attacker can inject malicious scripts via crafted input that is stored and subsequently executed when an administrator accesses the affected component. The vulnerability was published on May 27, 2026, but no CVSS score or remediation details have been provided. The affected versions are unspecified, and no vendor advisory or patch links are available.

Successful exploitation could allow an attacker to execute arbitrary scripts in the context of an administrator's browser, potentially leading to session hijacking, unauthorized actions, or disclosure of sensitive information. However, no known exploits are reported in the wild, and the extent of impact depends on the deployment and usage of the vulnerable component.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, administrators should exercise caution when accessing the affected component and consider implementing web application firewall (WAF) rules to detect and block suspicious input targeting /admin/config-module.php. Monitoring for unusual administrative activity may also help detect exploitation attempts.