CVE-2026-16066 Welcart e-Commerce < 2.11.34 - Author+ Stored XSS via Product Name
Authors can inject scripts into product names, executing code in visitors' browsers via the Welcart e-Commerce plugin.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-16066?
CVE-2026-16066 is a medium-severity cross-site scripting vulnerability in Unknown Welcart e-Commerce, published on 12 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Welcart e-Commerce WordPress plugin before 2.11.34 does not sanitise or escape a product field before outputting it on the product pages, allowing users with the Author role and above to inject arbitrary web scripts that execute in the browser of any visitor viewing the product page.
Weakness: CWE-79
Which versions are affected by CVE-2026-16066?
How do I fix CVE-2026-16066?
No fix has been published for CVE-2026-16066 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-2026-16066 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-16066 exists.
Sources
Also known as GHSA-xgc5-xxmg-c9x4.