CVE-2026-105124 W (wcms) through 3.18.0 Unauthenticated Stored XSS via Login Username and Comments
Unauthenticated attackers can inject scripts via login fields or comments, executing code with administrator privileges in the W CMS admin interface.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-105124?
CVE-2026-105124 is a medium-severity cross-site scripting vulnerability in vincent-peugnet wcms, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-105124?
How do I fix CVE-2026-105124?
No fix has been published for CVE-2026-105124 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-105124 being exploited?
There is no known exploitation of CVE-2026-105124 in the wild and no public exploit code.
Sources
Also known as GHSA-f4pc-vr7p-jfm7.