CVE-2026-45053 CubeCart: Authenticated Arbitrary File Upload to RCE in REST Files API
Authenticated attackers with API access can upload malicious PHP files to achieve remote code execution on CubeCart installations.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-45053?
CVE-2026-45053 is a critical vulnerability in cubecart v6, published on 13 May 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
CubeCart is an ecommerce software solution. Prior to 6.7.0, an Authenticated Arbitrary File Upload vulnerability exists in the REST API File Manager endpoint (POST /api/v1/files) of CubeCart. The endpoint allows any holder of an API key with files:rw permission to upload PHP source files into the web-accessible images/source/ directory, where they are executed by the web server. Combined with a path-traversal flaw in the same endpoint's filepath parameter, a single API request writes a webshell anywhere the webserver process can write — including the document root — yielding full Remote Code Execution. This vulnerability is fixed in 6.7.0.
Weakness: CWE-434
Which versions are affected by CVE-2026-45053?
How do I fix CVE-2026-45053?
No fix has been published for CVE-2026-45053 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-45053 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-45053 exists.
Sources
Also known as GHSA-652f-8c88-25cx.