CVE-2026-54645 CubeCart: Stored XSS in Product Description Editor via Global Sanitizer Bypass
Administrators can inject persistent JavaScript into product descriptions, leading to session hijacking or malicious actions when viewed by visitors or other admins.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-54645?
CVE-2026-54645 is a medium-severity cross-site scripting vulnerability in cubecart v6, published on 17 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
CubeCart is an ecommerce software solution. Prior to 6.7.5, admin/sources/products.index.inc.php reads the description, description_short, and spec_copy rich-text fields from $GLOBALS['RAW']['POST'] and removes only script elements before the values are stored and rendered through Smarty templates. An administrator with product-editing rights can store event-handler attributes, SVG content, or javascript: URIs that bypass this filter, causing persistent JavaScript execution when a storefront visitor or another administrator views the product content and enabling session exposure or unauthorized browser-context actions. This issue is fixed in version 6.7.5.
Weakness: CWE-79
Which versions are affected by CVE-2026-54645?
How do I fix CVE-2026-54645?
No fix has been published for CVE-2026-54645 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-2026-54645 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54645 exists.
Public exploit code: 1 Exploit-DB entry.
Sources
Also known as GHSA-43f6-gfcf-wj9c.