CVE-2026-19914 Welcart e-Commerce <= 2.12.1 - Unauthenticated Stored Cross-Site Scripting via 'custom_order' Parameter
Unauthenticated attackers can inject malicious scripts via the guest checkout form, which execute when administrators view orders, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-19914?
CVE-2026-19914 is a high-severity cross-site scripting vulnerability in uscnanbu Welcart e-Commerce, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Welcart e-Commerce plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'custom_order' parameter in all versions up to, and including, 2.12.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injected payload is delivered via the guest checkout form, requiring no authentication, and executes when an administrator views the affected order in the WordPress admin panel.
Weakness: CWE-79
Which versions are affected by CVE-2026-19914?
How do I fix CVE-2026-19914?
No fix has been published for CVE-2026-19914 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-2026-19914 being exploited?
There is no known exploitation of CVE-2026-19914 in the wild and no public exploit code.
Sources
Also known as GHSA-g3pg-45c8-ww54.