What is CVE-2023-45384?

CVE-2023-45384 is a critical-severity vulnerability in Knowband Supercheckout, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-10-19.

How severe is CVE-2023-45384?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Arbitrary file upload in Knowband Supercheckout

CVE-2023-45384

KnowBand supercheckout > 5.0.7 and < 6.0.7 is vulnerable to Unrestricted Upload of File with Dangerous Type. In the module "Module One Page Checkout, Social Login & Mailchimp" (supercheckout), a guest can upload files with extensions .php

Vulnerability class: Unrestricted File Upload

Published 2023-10-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (45.6th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 45.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Knowband Supercheckout

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

addons.prestashop.com/fr/processus-rapide-commande/18016-one-page-checkout-soci… (Product)
security.friendsofpresta.org/modules/2023/10/17/supercheckout.html (Third Party Advisory)

Frequently asked questions

What is CVE-2023-45384?: CVE-2023-45384 is a critical-severity vulnerability in Knowband Supercheckout, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2023-10-19.
How severe is CVE-2023-45384?: Critical severity. CVSS v3 base score is 9.8 out of 10.