W (wcms) through 3.18.0 Unauthenticated Stored XSS via Login Username and Comments

Advisories

W (wcms) through 3.18.0 Unauthenticated Stored XSS via Login Username and Comments

severity: medium
date: 10/3/2026
Affecting: wcms <= 3.18.0
CVE: CVE-2026-105124
CWE: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS: 5.3
CVSS V4 Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
References: GitHub Issue #662
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
Credit: ikram-4
Description: 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.

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