CubeCart up to 6.6.x /api/v1/files unrestricted upload

Summaryinfo

A vulnerability described as critical has been identified in CubeCart up to 6.6.x. This issue affects some unknown processing of the file /api/v1/files. The manipulation results in unrestricted upload. This vulnerability is cataloged as CVE-2026-45053. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in CubeCart up to 6.6.x. Affected is an unknown code block of the file /api/v1/files. The manipulation with an unknown input leads to a unrestricted upload vulnerability. CWE is classifying the issue as CWE-434. The product allows the attacker to upload or transfer files of dangerous types that can be automatically processed within the product's environment. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-45053 since 05/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Additional levels of successful authentication are needed for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1608.002 by the MITRE ATT&CK project.

Upgrading to version 6.7.0 eliminates this vulnerability.

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Productinfo

Type

• E-Commerce Management Software

Name

• CubeCart

Version

• 6.0
• 6.1
• 6.2
• 6.3
• 6.4
• 6.5
• 6.6

License

• open-source

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