Vulnerability · Published Oct 3, 2026 · Assigned by VulnCheck

CVE-2026-105124W (wcms) through 3.18.0 Unauthenticated Stored XSS via Login Username and Comments

Medium 6.1

In plain English

A medium-severity cross-site scripting in wcms from vincent-peugnet. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium

Exploit odds (30 days)0.2%top 88.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
vincent-peugnet	wcms	0 – through 3.18.0

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

GitHub Issue #662 issue-tracking
https://github.com/vincent-peugnet/wcms product
https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/class/Controllerconnect.php#L56 technical-description
https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/adminlog.php#L71 technical-description
https://github.com/vincent-peugnet/wcms/blob/cda5bcdb95dbdb1e804fdfe0e5fd2e2b2f8a90e2/app/view/templates/editrightbar.php#L110 technical-description
VulnCheck Advisory: W (wcms) through 3.18.0 Unauthenticated Stored XSS via Login Username and Comments third-party-advisory