CVE-2026-105124

W (vincent-peugnet/wcms) through 3.18.0 contains a stored cross-site scripting vulnerability that allows unauthenticated attackers to inject scripts via the login user field and visitor comment website field. Attackers can submit failed logins rendered unescaped in the adminlog.php log viewer, or comment URLs echoed into href attributes in editrightbar.php, executing script with administrator or editor privileges.

• https://github.com/vincent-peugnet/wcms
• https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerconnect.php#L56
• https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/adminlog.php#L71
• https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/editrightbar.php#L110
• https://github.com/vincent-peugnet/wcms/issues/662
• https://www.vulncheck.com/advisories/w-wcms-through-3.18.0-unauthenticated-stored-xss-via-login-username-and-comments