What is CVE-2023-26686?

CVE-2023-26686 is a critical-severity vulnerability in Cs-Cart Multivendor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-09-25.

How severe is CVE-2023-26686?

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

Arbitrary file upload in Cs-Cart Multivendor

CVE-2023-26686

File Upload vulnerability in CS-Cart MultiVendor 4.16.1 allows remote attackers to run arbitrary code via the image upload feature when customizing a shop.

Vulnerability class: Unrestricted File Upload

Published 2024-09-25 · 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: 0.007 (52.7th percentile), scored 2026-10-21.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 53rd percentile — 52.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Cs-Cart Multivendor — versions 4.16.1

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

www.cs-cart.com/multivendor.html (Product)
github.com/cybrops-io/CVEs/tree/main/CVE-2023-26686 - File Upload vulnerability… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2023-26686?: CVE-2023-26686 is a critical-severity vulnerability in Cs-Cart Multivendor, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2024-09-25.
How severe is CVE-2023-26686?: Critical severity. CVSS v3 base score is 9.8 out of 10.