CVE-2026-54644 CubeCart: XSS via Anchor Tag Attribute Injection in gui.class.php Message System
Attackers can inject JavaScript via anchor tags in error messages, leading to session hijacking or unauthorized actions in CubeCart.
- 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-2026-54644?
CVE-2026-54644 is a medium-severity cross-site scripting vulnerability in cubecart v6, published on 17 Sep 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
CubeCart is an ecommerce software solution. Prior to 6.7.5, the _errorMessage method in classes/gui.class.php uses strip_tags to permit anchor elements in error, information, and warning messages while retaining unsafe href values and onclick event handlers. Attacker-controlled search or input data that reaches a GUI message can carry a javascript: URI or event handler through the filter, and viewing or interacting with the rendered anchor executes JavaScript in the victim's browser session, enabling session exposure or unauthorized application actions. This issue is fixed in version 6.7.5.
Weakness: CWE-79
Which versions are affected by CVE-2026-54644?
How do I fix CVE-2026-54644?
No fix has been published for CVE-2026-54644 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-2026-54644 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54644 exists.
Public exploit code: 1 Exploit-DB entry.
Sources
Also known as GHSA-v55x-fh73-29vq.