What is CVE-2026-45053?

CVE-2026-45053 is a critical-severity vulnerability in Cubecart V6, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2026-05-13.

How severe is CVE-2026-45053?

Critical severity. CVSS v3 base score is 9.1 out of 10.

Arbitrary file upload in Cubecart V6

CVE-2026-45053

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 wi…

Vulnerability class: Unrestricted File Upload

EPSS: 0.002 (48.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.

Affected products

Cubecart V6 — versions < 6.7.0

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-45053?: CVE-2026-45053 is a critical-severity vulnerability in Cubecart V6, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.1/10. Published 2026-05-13.
How severe is CVE-2026-45053?: Critical severity. CVSS v3 base score is 9.1 out of 10.