What’s Vulnerable › Vulnerabilities

CVE-2026-45053: CubeCart: Authenticated Arbitrary File Upload to RCE in REST Files API

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-13 · updated 2026-06-17
• Weakness: CWE-434

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.

Affected products

• cubecart v6: before 6.7.0

References

• https://github.com/cubecart/v6/security/advisories/GHSA-652f-8c88-25cx
• https://github.com/cubecart/v6/security/advisories/GHSA-652f-8c88-25cx

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